69400880 has 20 divisors (see below), whose sum is σ = 161357232. Its totient is φ = 27760320.

The previous prime is 69400879. The next prime is 69400883. The reversal of 69400880 is 8800496.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 69400880.

It is not an unprimeable number, because it can be changed into a prime (69400883) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 433676 + ... + 433835.

Almost surely, 2^69400880 is an apocalyptic number.

It is an amenable number.

69400880 is an abundant number, since it is smaller than the sum of its proper divisors (91956352).

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

69400880 is a wasteful number, since it uses less digits than its factorization.

69400880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867524 (or 867518 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 69400880 is about 8330.7190566001. The cubic root of 69400880 is about 410.9493764151.

The spelling of 69400880 in words is "sixty-nine million, four hundred thousand, eight hundred eighty".