64633461 has 4 divisors (see below), whose sum is σ = 86177952. Its totient is φ = 43088972.

The previous prime is 64633453. The next prime is 64633529. The reversal of 64633461 is 16433646.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64633461 - 2³ = 64633453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64633441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10772241 + ... + 10772246.

It is an arithmetic number, because the mean of its divisors is an integer number (21544488).

Almost surely, 2^64633461 is an apocalyptic number.

It is an amenable number.

64633461 is a deficient number, since it is larger than the sum of its proper divisors (21544491).

64633461 is a wasteful number, since it uses less digits than its factorization.

64633461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21544490.

The product of its digits is 31104, while the sum is 33.

The square root of 64633461 is about 8039.4938273501. The cubic root of 64633461 is about 401.3153801131.

The spelling of 64633461 in words is "sixty-four million, six hundred thirty-three thousand, four hundred sixty-one".