64761772 has 12 divisors (see below), whose sum is σ = 119999880. Its totient is φ = 30476096.

The previous prime is 64761757. The next prime is 64761773. The reversal of 64761772 is 27716746.

It is a super-2 number, since 2×64761772² = 8388174225159968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64761773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476122 + ... + 476257.

It is an arithmetic number, because the mean of its divisors is an integer number (9999990).

Almost surely, 2^64761772 is an apocalyptic number.

It is an amenable number.

64761772 is a deficient number, since it is larger than the sum of its proper divisors (55238108).

64761772 is a wasteful number, since it uses less digits than its factorization.

64761772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952400 (or 952398 counting only the distinct ones).

The product of its digits is 98784, while the sum is 40.

The square root of 64761772 is about 8047.4699129602. The cubic root of 64761772 is about 401.5807696886.

The spelling of 64761772 in words is "sixty-four million, seven hundred sixty-one thousand, seven hundred seventy-two".