64934649 has 16 divisors (see below), whose sum is σ = 103600000. Its totient is φ = 39959568.

The previous prime is 64934621. The next prime is 64934663. The reversal of 64934649 is 94643946.

It is a happy number.

It is not a de Polignac number, because 64934649 - 2¹² = 64930553 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64934669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92149 + ... + 92850.

It is an arithmetic number, because the mean of its divisors is an integer number (6475000).

Almost surely, 2^64934649 is an apocalyptic number.

It is an amenable number.

64934649 is a deficient number, since it is larger than the sum of its proper divisors (38665351).

64934649 is a wasteful number, since it uses less digits than its factorization.

64934649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185021 (or 185015 counting only the distinct ones).

The product of its digits is 559872, while the sum is 45.

The square root of 64934649 is about 8058.2038321204. The cubic root of 64934649 is about 401.9377827526.

The spelling of 64934649 in words is "sixty-four million, nine hundred thirty-four thousand, six hundred forty-nine".