64764775 has 12 divisors (see below), whose sum is σ = 80675392. Its totient is φ = 51575040.

The previous prime is 64764769. The next prime is 64764779. The reversal of 64764775 is 57746746.

It is not a de Polignac number, because 64764775 - 2³ = 64764767 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 (64764779) 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, 234 + ... + 11383.

Almost surely, 2^64764775 is an apocalyptic number.

64764775 is a deficient number, since it is larger than the sum of its proper divisors (15910617).

64764775 is a wasteful number, since it uses less digits than its factorization.

64764775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11850 (or 11845 counting only the distinct ones).

The product of its digits is 987840, while the sum is 46.

The square root of 64764775 is about 8047.6564911780. The cubic root of 64764775 is about 401.5869766858.

The spelling of 64764775 in words is "sixty-four million, seven hundred sixty-four thousand, seven hundred seventy-five".