64274661 has 32 divisors (see below), whose sum is σ = 106704000. Its totient is φ = 37895040.

The previous prime is 64274657. The next prime is 64274669. The reversal of 64274661 is 16647246.

64274661 is a `hidden beast` number, since 642 + 7 + 4 + 6 + 6 + 1 = 666.

64274661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64274661 - 2² = 64274657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64274669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8065 + ... + 13913.

It is an arithmetic number, because the mean of its divisors is an integer number (3334500).

Almost surely, 2^64274661 is an apocalyptic number.

It is an amenable number.

64274661 is a deficient number, since it is larger than the sum of its proper divisors (42429339).

64274661 is a wasteful number, since it uses less digits than its factorization.

64274661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5906 (or 5900 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 64274661 is about 8017.1479342719. The cubic root of 64274661 is about 400.5713938008.

The spelling of 64274661 in words is "sixty-four million, two hundred seventy-four thousand, six hundred sixty-one".