697072896 has 324 divisors, whose sum is σ = 2355368652. Its totient is φ = 196411392.

The previous prime is 697072889. The next prime is 697072919. The reversal of 697072896 is 698270796.

It can be written as a sum of positive squares in 6 ways, for example, as 109495296 + 587577600 = 10464^2 + 24240^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18839790 + ... + 18839826.

Almost surely, 2^697072896 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 697072896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1177684326).

697072896 is an abundant number, since it is smaller than the sum of its proper divisors (1658295756).

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

697072896 is a wasteful number, since it uses less digits than its factorization.

697072896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The square root of 697072896 is about 26402.1380952377. The cubic root of 697072896 is about 886.6646596396.

The spelling of 697072896 in words is "six hundred ninety-seven million, seventy-two thousand, eight hundred ninety-six".