69897690 has 48 divisors (see below), whose sum is σ = 189641088. Its totient is φ = 17828448.

The previous prime is 69897673. The next prime is 69897739. The reversal of 69897690 is 9679896.

It is a super-2 number, since 2×69897690² = 9771374134672200, which contains 22 as substring.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 14814 + ... + 18953.

It is an arithmetic number, because the mean of its divisors is an integer number (3950856).

Almost surely, 2^69897690 is an apocalyptic number.

69897690 is an abundant number, since it is smaller than the sum of its proper divisors (119743398).

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

69897690 is a wasteful number, since it uses less digits than its factorization.

69897690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33803 (or 33800 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The square root of 69897690 is about 8360.4838376735. The cubic root of 69897690 is about 411.9276469860.

The spelling of 69897690 in words is "sixty-nine million, eight hundred ninety-seven thousand, six hundred ninety".