215064801 has 40 divisors (see below), whose sum is σ = 375746624. Its totient is φ = 120022560.

The previous prime is 215064791. The next prime is 215064821. The reversal of 215064801 is 108460512.

215064801 is a `hidden beast` number, since 2 + 15 + 0 + 648 + 0 + 1 = 666.

It is not a de Polignac number, because 215064801 - 2⁵ = 215064769 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215064821) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 19971 + ... + 28791.

Almost surely, 2^215064801 is an apocalyptic number.

215064801 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

215064801 is a deficient number, since it is larger than the sum of its proper divisors (160681823).

215064801 is an equidigital number, since it uses as much as digits as its factorization.

215064801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8883 (or 8874 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 215064801 is about 14665.0878278993. The cubic root of 215064801 is about 599.1328222751.

The spelling of 215064801 in words is "two hundred fifteen million, sixty-four thousand, eight hundred one".