697976928 has 144 divisors (see below), whose sum is σ = 2206700496. Its totient is φ = 207467520.

The previous prime is 697976911. The next prime is 697976953. The reversal of 697976928 is 829679796.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 165826 + ... + 169982.

It is an arithmetic number, because the mean of its divisors is an integer number (15324309).

Almost surely, 2^697976928 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 697976928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1103350248).

697976928 is an abundant number, since it is smaller than the sum of its proper divisors (1508723568).

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

697976928 is a wasteful number, since it uses less digits than its factorization.

697976928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4237 (or 4226 counting only the distinct ones).

The product of its digits is 20575296, while the sum is 63.

The square root of 697976928 is about 26419.2529795980. The cubic root of 697976928 is about 887.0477984094.

The spelling of 697976928 in words is "six hundred ninety-seven million, nine hundred seventy-six thousand, nine hundred twenty-eight".