696549840 has 320 divisors, whose sum is σ = 2706255360. Its totient is φ = 144678912.

The previous prime is 696549839. The next prime is 696549853. The reversal of 696549840 is 48945696.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24018946 + ... + 24018974.

It is an arithmetic number, because the mean of its divisors is an integer number (8457048).

Almost surely, 2^696549840 is an apocalyptic number.

696549840 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 696549840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1353127680).

696549840 is an abundant number, since it is smaller than the sum of its proper divisors (2009705520).

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

696549840 is a wasteful number, since it uses less digits than its factorization.

696549840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 63 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 51.

The square root of 696549840 is about 26392.2306749543. The cubic root of 696549840 is about 886.4428314201.

The spelling of 696549840 in words is "six hundred ninety-six million, five hundred forty-nine thousand, eight hundred forty".