64990876 has 6 divisors (see below), whose sum is σ = 113734040. Its totient is φ = 32495436.

The previous prime is 64990867. The next prime is 64990903. The reversal of 64990876 is 67809946.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8123856 + ... + 8123863.

Almost surely, 2^64990876 is an apocalyptic number.

It is an amenable number.

64990876 is a deficient number, since it is larger than the sum of its proper divisors (48743164).

64990876 is a wasteful number, since it uses less digits than its factorization.

64990876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16247723 (or 16247721 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 64990876 is about 8061.6918819811. The cubic root of 64990876 is about 402.0537621059.

The spelling of 64990876 in words is "sixty-four million, nine hundred ninety thousand, eight hundred seventy-six".