64972926 has 24 divisors (see below), whose sum is σ = 141205584. Its totient is φ = 21591360.

The previous prime is 64972889. The next prime is 64972939. The reversal of 64972926 is 62927946.

It is a super-2 number, since 2×64972926² = 8442962226002952, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 711 + ... + 11421.

It is an arithmetic number, because the mean of its divisors is an integer number (5883566).

Almost surely, 2^64972926 is an apocalyptic number.

64972926 is an abundant number, since it is smaller than the sum of its proper divisors (76232658).

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

64972926 is a wasteful number, since it uses less digits than its factorization.

64972926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11056 (or 11053 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 64972926 is about 8060.5785152184. The cubic root of 64972926 is about 402.0167439376.

The spelling of 64972926 in words is "sixty-four million, nine hundred seventy-two thousand, nine hundred twenty-six".