64924091 has 4 divisors (see below), whose sum is σ = 65158752. Its totient is φ = 64689432.

The previous prime is 64923983. The next prime is 64924129. The reversal of 64924091 is 19042946.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64924091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64924291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116915 + ... + 117468.

It is an arithmetic number, because the mean of its divisors is an integer number (16289688).

Almost surely, 2^64924091 is an apocalyptic number.

64924091 is a deficient number, since it is larger than the sum of its proper divisors (234661).

64924091 is a wasteful number, since it uses less digits than its factorization.

64924091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234660.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 64924091 is about 8057.5486967191. The cubic root of 64924091 is about 401.9159973155.

The spelling of 64924091 in words is "sixty-four million, nine hundred twenty-four thousand, ninety-one".