64492951 has 8 divisors (see below), whose sum is σ = 68528160. Its totient is φ = 60694624.

The previous prime is 64492949. The next prime is 64492957. The reversal of 64492951 is 15929446.

It is not a de Polignac number, because 64492951 - 2¹ = 64492949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64492957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1651 + ... + 11476.

It is an arithmetic number, because the mean of its divisors is an integer number (8566020).

Almost surely, 2^64492951 is an apocalyptic number.

64492951 is a deficient number, since it is larger than the sum of its proper divisors (4035209).

64492951 is an equidigital number, since it uses as much as digits as its factorization.

64492951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13178 (or 13144 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 64492951 is about 8030.7503385425. The cubic root of 64492951 is about 401.0243557490.

The spelling of 64492951 in words is "sixty-four million, four hundred ninety-two thousand, nine hundred fifty-one".