69890920 has 32 divisors (see below), whose sum is σ = 171551520. Its totient is φ = 25414720.

The previous prime is 69890917. The next prime is 69890923. The reversal of 69890920 is 2909896.

It is an interprime number because it is at equal distance from previous prime (69890917) and next prime (69890923).

It is not an unprimeable number, because it can be changed into a prime (69890923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78982 + ... + 79861.

It is an arithmetic number, because the mean of its divisors is an integer number (5360985).

Almost surely, 2^69890920 is an apocalyptic number.

It is an amenable number.

69890920 is an abundant number, since it is smaller than the sum of its proper divisors (101660600).

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

69890920 is a wasteful number, since it uses less digits than its factorization.

69890920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158865 (or 158861 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 69890920 is about 8360.0789469957. The cubic root of 69890920 is about 411.9143473562.

The spelling of 69890920 in words is "sixty-nine million, eight hundred ninety thousand, nine hundred twenty".