697407984 has 180 divisors, whose sum is σ = 2445400776. Its totient is φ = 183907584.

The previous prime is 697407967. The next prime is 697407989. The reversal of 697407984 is 489704796.

It is a happy number.

It is a super-2 number, since 2×697407984² = 972755792293888512, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 697407984.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697407989) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 87927 + ... + 95529.

Almost surely, 2^697407984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 697407984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1222700388).

697407984 is an abundant number, since it is smaller than the sum of its proper divisors (1747992792).

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

697407984 is a wasteful number, since it uses less digits than its factorization.

697407984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7644 (or 7628 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The square root of 697407984 is about 26408.4831824927. The cubic root of 697407984 is about 886.8067122590.

The spelling of 697407984 in words is "six hundred ninety-seven million, four hundred seven thousand, nine hundred eighty-four".