69138976 has 24 divisors (see below), whose sum is σ = 136382400. Its totient is φ = 34502208.

The previous prime is 69138947. The next prime is 69138991. The reversal of 69138976 is 67983196.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17365 + ... + 20971.

It is an arithmetic number, because the mean of its divisors is an integer number (5682600).

Almost surely, 2^69138976 is an apocalyptic number.

It is an amenable number.

69138976 is a deficient number, since it is larger than the sum of its proper divisors (67243424).

69138976 is a wasteful number, since it uses less digits than its factorization.

69138976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4216 (or 4208 counting only the distinct ones).

The product of its digits is 489888, while the sum is 49.

The square root of 69138976 is about 8314.9850270460. The cubic root of 69138976 is about 410.4317799045.

The spelling of 69138976 in words is "sixty-nine million, one hundred thirty-eight thousand, nine hundred seventy-six".