695907840 has 320 divisors, whose sum is σ = 2388418560. Its totient is φ = 172523520.

The previous prime is 695907827. The next prime is 695907847. The reversal of 695907840 is 48709596.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 695907840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (695907847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8808921 + ... + 8808999.

It is an arithmetic number, because the mean of its divisors is an integer number (7463808).

Almost surely, 2^695907840 is an apocalyptic number.

695907840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 695907840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1194209280).

695907840 is an abundant number, since it is smaller than the sum of its proper divisors (1692510720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

695907840 is a wasteful number, since it uses less digits than its factorization.

695907840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 695907840 is about 26380.0652008292. The cubic root of 695907840 is about 886.1704071573.

The spelling of 695907840 in words is "six hundred ninety-five million, nine hundred seven thousand, eight hundred forty".