64682215 has 24 divisors (see below), whose sum is σ = 86144688. Its totient is φ = 46575360.

The previous prime is 64682201. The next prime is 64682227. The reversal of 64682215 is 51228646.

It is not a de Polignac number, because 64682215 - 2⁷ = 64682087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33712 + ... + 35578.

It is an arithmetic number, because the mean of its divisors is an integer number (3589362).

Almost surely, 2^64682215 is an apocalyptic number.

64682215 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

64682215 is a deficient number, since it is larger than the sum of its proper divisors (21462473).

64682215 is a wasteful number, since it uses less digits than its factorization.

64682215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939 (or 1926 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 64682215 is about 8042.5254118343. The cubic root of 64682215 is about 401.4162608449.

The spelling of 64682215 in words is "sixty-four million, six hundred eighty-two thousand, two hundred fifteen".