697428325528 has 64 divisors (see below), whose sum is σ = 1433556727200. Its totient is φ = 315459271680.

The previous prime is 697428325519. The next prime is 697428325537. The reversal of 697428325528 is 825523824796.

697428325528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (697428325519) and next prime (697428325537).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36672150 + ... + 36691162.

Almost surely, 2^697428325528 is an apocalyptic number.

It is an amenable number.

697428325528 is an abundant number, since it is smaller than the sum of its proper divisors (736128401672).

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

697428325528 is a wasteful number, since it uses less digits than its factorization.

697428325528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21052 (or 21048 counting only the distinct ones).

The product of its digits is 58060800, while the sum is 61.

The spelling of 697428325528 in words is "six hundred ninety-seven billion, four hundred twenty-eight million, three hundred twenty-five thousand, five hundred twenty-eight".