64215413 has 4 divisors (see below), whose sum is σ = 65173920. Its totient is φ = 63256908.

The previous prime is 64215401. The next prime is 64215439. The reversal of 64215413 is 31451246.

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 64215413 - 2⁸ = 64215157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64265413) 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 3 ways as a sum of consecutive naturals, for example, 479153 + ... + 479286.

It is an arithmetic number, because the mean of its divisors is an integer number (16293480).

Almost surely, 2^64215413 is an apocalyptic number.

It is an amenable number.

64215413 is a deficient number, since it is larger than the sum of its proper divisors (958507).

64215413 is an equidigital number, since it uses as much as digits as its factorization.

64215413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 958506.

The product of its digits is 2880, while the sum is 26.

The square root of 64215413 is about 8013.4520027264. The cubic root of 64215413 is about 400.4482745206.

Adding to 64215413 its reverse (31451246), we get a palindrome (95666659).

The spelling of 64215413 in words is "sixty-four million, two hundred fifteen thousand, four hundred thirteen".