697685694 has 16 divisors (see below), whose sum is σ = 1396031232. Its totient is φ = 232451928.

The previous prime is 697685687. The next prime is 697685701. The reversal of 697685694 is 496586796.

It is an interprime number because it is at equal distance from previous prime (697685687) and next prime (697685701).

It is a super-2 number, since 2×697685694² = 973530655224523272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13174 + ... + 39609.

It is an arithmetic number, because the mean of its divisors is an integer number (87251952).

Almost surely, 2^697685694 is an apocalyptic number.

697685694 is an abundant number, since it is smaller than the sum of its proper divisors (698345538).

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

697685694 is a wasteful number, since it uses less digits than its factorization.

697685694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54991.

The product of its digits is 19595520, while the sum is 60.

The square root of 697685694 is about 26413.7406286955. The cubic root of 697685694 is about 886.9244063566.

The spelling of 697685694 in words is "six hundred ninety-seven million, six hundred eighty-five thousand, six hundred ninety-four".