64136651 has 8 divisors (see below), whose sum is σ = 66393600. Its totient is φ = 61907328.

The previous prime is 64136629. The next prime is 64136671. The reversal of 64136651 is 15663146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64136651 - 2¹⁰ = 64135627 is a prime.

It is a super-2 number, since 2×64136651² = 8227020002991602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64136671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2126 + ... + 11523.

It is an arithmetic number, because the mean of its divisors is an integer number (8299200).

Almost surely, 2^64136651 is an apocalyptic number.

64136651 is a deficient number, since it is larger than the sum of its proper divisors (2256949).

64136651 is a wasteful number, since it uses less digits than its factorization.

64136651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13813.

The product of its digits is 12960, while the sum is 32.

The square root of 64136651 is about 8008.5361334017. The cubic root of 64136651 is about 400.2844872029.

Adding to 64136651 its reverse (15663146), we get a palindrome (79799797).

The spelling of 64136651 in words is "sixty-four million, one hundred thirty-six thousand, six hundred fifty-one".