695431680 has 320 divisors, whose sum is σ = 2413559808. Its totient is φ = 170311680.

The previous prime is 695431669. The next prime is 695431727. The reversal of 695431680 is 86134596.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5475777 + ... + 5475903.

Almost surely, 2^695431680 is an apocalyptic number.

695431680 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 695431680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1206779904).

695431680 is an abundant number, since it is smaller than the sum of its proper divisors (1718128128).

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

695431680 is a wasteful number, since it uses less digits than its factorization.

695431680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 695431680 is about 26371.0386598632. The cubic root of 695431680 is about 885.9682466832.

The spelling of 695431680 in words is "six hundred ninety-five million, four hundred thirty-one thousand, six hundred eighty".