64994031 has 12 divisors (see below), whose sum is σ = 94027752. Its totient is φ = 43261296.

The previous prime is 64994029. The next prime is 64994051. The reversal of 64994031 is 13049946.

64994031 is a `hidden beast` number, since 649 + 9 + 4 + 0 + 3 + 1 = 666.

It is not a de Polignac number, because 64994031 - 2¹ = 64994029 is a prime.

It is a super-2 number, since 2×64994031² = 8448448131257922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64994051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 760 + ... + 11426.

It is an arithmetic number, because the mean of its divisors is an integer number (7835646).

Almost surely, 2^64994031 is an apocalyptic number.

64994031 is a deficient number, since it is larger than the sum of its proper divisors (29033721).

64994031 is a wasteful number, since it uses less digits than its factorization.

64994031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11350 (or 11347 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 64994031 is about 8061.8875581343. The cubic root of 64994031 is about 402.0602679375.

The spelling of 64994031 in words is "sixty-four million, nine hundred ninety-four thousand, thirty-one".