697153728 has 28 divisors (see below), whose sum is σ = 1844553080. Its totient is φ = 232384512.

The previous prime is 697153703. The next prime is 697153739. The reversal of 697153728 is 827351796.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1815313 + ... + 1815696.

Almost surely, 2^697153728 is an apocalyptic number.

It is an amenable number.

697153728 is an abundant number, since it is smaller than the sum of its proper divisors (1147399352).

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

697153728 is a wasteful number, since it uses less digits than its factorization.

697153728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3631024 (or 3631014 counting only the distinct ones).

The product of its digits is 635040, while the sum is 48.

The square root of 697153728 is about 26403.6688359781. The cubic root of 697153728 is about 886.6989306166.

The spelling of 697153728 in words is "six hundred ninety-seven million, one hundred fifty-three thousand, seven hundred twenty-eight".