64726947 has 12 divisors (see below), whose sum is σ = 94232320. Its totient is φ = 42810768.

The previous prime is 64726931. The next prime is 64726957. The reversal of 64726947 is 74962746.

It is not a de Polignac number, because 64726947 - 2⁴ = 64726931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64726957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27172 + ... + 29457.

Almost surely, 2^64726947 is an apocalyptic number.

64726947 is a deficient number, since it is larger than the sum of its proper divisors (29505373).

64726947 is a wasteful number, since it uses less digits than its factorization.

64726947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56762 (or 56759 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 64726947 is about 8045.3058984727. The cubic root of 64726947 is about 401.5087747581.

The spelling of 64726947 in words is "sixty-four million, seven hundred twenty-six thousand, nine hundred forty-seven".