64152621 has 32 divisors (see below), whose sum is σ = 102990720. Its totient is φ = 39232512.

The previous prime is 64152617. The next prime is 64152629. The reversal of 64152621 is 12625146.

It is not a de Polignac number, because 64152621 - 2² = 64152617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64152629) 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, 67270 + ... + 68216.

It is an arithmetic number, because the mean of its divisors is an integer number (3218460).

Almost surely, 2^64152621 is an apocalyptic number.

It is an amenable number.

64152621 is a deficient number, since it is larger than the sum of its proper divisors (38838099).

64152621 is a wasteful number, since it uses less digits than its factorization.

64152621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162 (or 1156 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 64152621 is about 8009.5331324616. The cubic root of 64152621 is about 400.3177080039.

Adding to 64152621 its reverse (12625146), we get a palindrome (76777767).

The spelling of 64152621 in words is "sixty-four million, one hundred fifty-two thousand, six hundred twenty-one".