64275669 has 24 divisors (see below), whose sum is σ = 95487392. Its totient is φ = 41640480.

The previous prime is 64275647. The next prime is 64275671. The reversal of 64275669 is 96657246.

64275669 is a `hidden beast` number, since 64 + 27 + 566 + 9 = 666.

It is not a de Polignac number, because 64275669 - 2¹² = 64271573 is a prime.

It is a super-2 number, since 2×64275669² = 8262723250795122, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64275469) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118539 + ... + 119079.

Almost surely, 2^64275669 is an apocalyptic number.

It is an amenable number.

64275669 is a deficient number, since it is larger than the sum of its proper divisors (31211723).

64275669 is a wasteful number, since it uses less digits than its factorization.

64275669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897 (or 894 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 64275669 is about 8017.2107992743. The cubic root of 64275669 is about 400.5734878031.

The spelling of 64275669 in words is "sixty-four million, two hundred seventy-five thousand, six hundred sixty-nine".