64994075 has 24 divisors (see below), whose sum is σ = 84049680. Its totient is φ = 49795200.

The previous prime is 64994071. The next prime is 64994081. The reversal of 64994075 is 57049946.

It is not a de Polignac number, because 64994075 - 2² = 64994071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64994071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113540 + ... + 114110.

It is an arithmetic number, because the mean of its divisors is an integer number (3502070).

Almost surely, 2^64994075 is an apocalyptic number.

64994075 is a deficient number, since it is larger than the sum of its proper divisors (19055605).

64994075 is a wasteful number, since it uses less digits than its factorization.

64994075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767 (or 762 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 64994075 is about 8061.8902870233. The cubic root of 64994075 is about 402.0603586671.

The spelling of 64994075 in words is "sixty-four million, nine hundred ninety-four thousand, seventy-five".