64163772 has 48 divisors (see below), whose sum is σ = 170857120. Its totient is φ = 20808576.

The previous prime is 64163753. The next prime is 64163819. The reversal of 64163772 is 27736146.

64163772 is a `hidden beast` number, since 641 + 6 + 3 + 7 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4033 + ... + 12024.

Almost surely, 2^64163772 is an apocalyptic number.

It is an amenable number.

64163772 is an abundant number, since it is smaller than the sum of its proper divisors (106693348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64163772 is a wasteful number, since it uses less digits than its factorization.

64163772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16107 (or 16099 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

The square root of 64163772 is about 8010.2292102037. The cubic root of 64163772 is about 400.3409010503.

The spelling of 64163772 in words is "sixty-four million, one hundred sixty-three thousand, seven hundred seventy-two".