69042864 has 80 divisors (see below), whose sum is σ = 199165824. Its totient is φ = 20428800.

The previous prime is 69042839. The next prime is 69042943. The reversal of 69042864 is 46824096.

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, 21184 + ... + 24224.

Almost surely, 2^69042864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69042864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99582912).

69042864 is an abundant number, since it is smaller than the sum of its proper divisors (130122960).

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

69042864 is a wasteful number, since it uses less digits than its factorization.

69042864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3106 (or 3100 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 69042864 is about 8309.2035719436. The cubic root of 69042864 is about 410.2415075254.

The spelling of 69042864 in words is "sixty-nine million, forty-two thousand, eight hundred sixty-four".