64272461 has 32 divisors (see below), whose sum is σ = 77728896. Its totient is φ = 52480000.

The previous prime is 64272457. The next prime is 64272463. The reversal of 64272461 is 16427246.

It is not a de Polignac number, because 64272461 - 2² = 64272457 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64272463) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 636311 + ... + 636411.

It is an arithmetic number, because the mean of its divisors is an integer number (2429028).

Almost surely, 2^64272461 is an apocalyptic number.

It is an amenable number.

64272461 is a deficient number, since it is larger than the sum of its proper divisors (13456435).

64272461 is a wasteful number, since it uses less digits than its factorization.

64272461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253.

The product of its digits is 16128, while the sum is 32.

The square root of 64272461 is about 8017.0107271975. The cubic root of 64272461 is about 400.5668234818.

It can be divided in two parts, 6427 and 2461, that added together give a palindrome (8888).

The spelling of 64272461 in words is "sixty-four million, two hundred seventy-two thousand, four hundred sixty-one".