64163472 has 40 divisors (see below), whose sum is σ = 166042944. Its totient is φ = 21350784.

The previous prime is 64163471. The next prime is 64163497. The reversal of 64163472 is 27436146.

It is a happy number.

It is a super-2 number, since 2×64163472² = 8233902278189568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64163471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51853 + ... + 53075.

Almost surely, 2^64163472 is an apocalyptic number.

It is an amenable number.

64163472 is an abundant number, since it is smaller than the sum of its proper divisors (101879472).

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

64163472 is a wasteful number, since it uses less digits than its factorization.

64163472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2327 (or 2321 counting only the distinct ones).

The product of its digits is 24192, while the sum is 33.

The square root of 64163472 is about 8010.2104841259. The cubic root of 64163472 is about 400.3402771133.

The spelling of 64163472 in words is "sixty-four million, one hundred sixty-three thousand, four hundred seventy-two".