64272663 has 96 divisors (see below), whose sum is σ = 123721920. Its totient is φ = 32659200.

The previous prime is 64272647. The next prime is 64272683. The reversal of 64272663 is 36627246.

It is a happy number.

64272663 is a `hidden beast` number, since 642 + 7 + 2 + 6 + 6 + 3 = 666.

It is not a de Polignac number, because 64272663 - 2⁴ = 64272647 is a prime.

It is a super-2 number, since 2×64272663² = 8261950418223138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64272683) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 636313 + ... + 636413.

It is an arithmetic number, because the mean of its divisors is an integer number (1288770).

Almost surely, 2^64272663 is an apocalyptic number.

64272663 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

64272663 is a deficient number, since it is larger than the sum of its proper divisors (59449257).

64272663 is a wasteful number, since it uses less digits than its factorization.

64272663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174 (or 161 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 64272663 is about 8017.0233253995. The cubic root of 64272663 is about 400.5672431245.

The spelling of 64272663 in words is "sixty-four million, two hundred seventy-two thousand, six hundred sixty-three".