64904441 has 8 divisors (see below), whose sum is σ = 75284160. Its totient is φ = 54801648.

The previous prime is 64904417. The next prime is 64904449. The reversal of 64904441 is 14440946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64904441 - 2¹⁸ = 64642297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64904398 and 64904407.

It is not an unprimeable number, because it can be changed into a prime (64904449) 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, 68726 + ... + 69663.

It is an arithmetic number, because the mean of its divisors is an integer number (9410520).

Almost surely, 2^64904441 is an apocalyptic number.

It is an amenable number.

64904441 is a deficient number, since it is larger than the sum of its proper divisors (10379719).

64904441 is a wasteful number, since it uses less digits than its factorization.

64904441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138463.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 64904441 is about 8056.3292509678. The cubic root of 64904441 is about 401.8754451048.

The spelling of 64904441 in words is "sixty-four million, nine hundred four thousand, four hundred forty-one".