64694043 has 12 divisors (see below), whose sum is σ = 95435808. Its totient is φ = 42211440.

The previous prime is 64694039. The next prime is 64694051. The reversal of 64694043 is 34049646.

64694043 is a `hidden beast` number, since 646 + 9 + 4 + 0 + 4 + 3 = 666.

It is not a de Polignac number, because 64694043 - 2² = 64694039 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 64693989 and 64694007.

It is not an unprimeable number, because it can be changed into a prime (64694243) 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, 76048 + ... + 76893.

It is an arithmetic number, because the mean of its divisors is an integer number (7952984).

Almost surely, 2^64694043 is an apocalyptic number.

64694043 is a deficient number, since it is larger than the sum of its proper divisors (30741765).

64694043 is a wasteful number, since it uses less digits than its factorization.

64694043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152994 (or 152991 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 64694043 is about 8043.2607193849. The cubic root of 64694043 is about 401.4407274475.

The spelling of 64694043 in words is "sixty-four million, six hundred ninety-four thousand, forty-three".