64633051 has 4 divisors (see below), whose sum is σ = 73866352. Its totient is φ = 55399752.

The previous prime is 64633033. The next prime is 64633057. The reversal of 64633051 is 15033646.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64633051 - 2⁹ = 64632539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64633057) 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, 4616640 + ... + 4616653.

It is an arithmetic number, because the mean of its divisors is an integer number (18466588).

Almost surely, 2^64633051 is an apocalyptic number.

64633051 is a deficient number, since it is larger than the sum of its proper divisors (9233301).

64633051 is an equidigital number, since it uses as much as digits as its factorization.

64633051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9233300.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 64633051 is about 8039.4683281919. The cubic root of 64633051 is about 401.3145315348.

Adding to 64633051 its reverse (15033646), we get a palindrome (79666697).

The spelling of 64633051 in words is "sixty-four million, six hundred thirty-three thousand, fifty-one".