64146772 has 12 divisors (see below), whose sum is σ = 112444276. Its totient is φ = 32019840.

The previous prime is 64146757. The next prime is 64146787. The reversal of 64146772 is 27764146.

It is an interprime number because it is at equal distance from previous prime (64146757) and next prime (64146787).

It can be written as a sum of positive squares in 2 ways, for example, as 5225796 + 58920976 = 2286^2 + 7676^2 .

It is a super-2 number, since 2×64146772² = 8229616716039968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10629 + ... + 15532.

Almost surely, 2^64146772 is an apocalyptic number.

It is an amenable number.

64146772 is a deficient number, since it is larger than the sum of its proper divisors (48297504).

64146772 is a wasteful number, since it uses less digits than its factorization.

64146772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26778 (or 26776 counting only the distinct ones).

The product of its digits is 56448, while the sum is 37.

The square root of 64146772 is about 8009.1679967397. The cubic root of 64146772 is about 400.3055415515.

The spelling of 64146772 in words is "sixty-four million, one hundred forty-six thousand, seven hundred seventy-two".