64134815 has 16 divisors (see below), whose sum is σ = 80006400. Its totient is φ = 49301760.

The previous prime is 64134809. The next prime is 64134817. The reversal of 64134815 is 51843146.

It is not a de Polignac number, because 64134815 - 2⁸ = 64134559 is a prime.

It is a super-2 number, since 2×64134815² = 8226548990168450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64134817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21707 + ... + 24483.

It is an arithmetic number, because the mean of its divisors is an integer number (5000400).

Almost surely, 2^64134815 is an apocalyptic number.

64134815 is a deficient number, since it is larger than the sum of its proper divisors (15871585).

64134815 is a wasteful number, since it uses less digits than its factorization.

64134815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2962.

The product of its digits is 11520, while the sum is 32.

The square root of 64134815 is about 8008.4215048910. The cubic root of 64134815 is about 400.2806676015.

The spelling of 64134815 in words is "sixty-four million, one hundred thirty-four thousand, eight hundred fifteen".