213664079 has 8 divisors (see below), whose sum is σ = 219136848. Its totient is φ = 208203840.

The previous prime is 213664069. The next prime is 213664081. The reversal of 213664079 is 970466312.

213664079 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 213664079 - 2²⁰ = 212615503 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 (213664019) 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, 38264 + ... + 43490.

It is an arithmetic number, because the mean of its divisors is an integer number (27392106).

Almost surely, 2^213664079 is an apocalyptic number.

213664079 is a deficient number, since it is larger than the sum of its proper divisors (5472769).

213664079 is an equidigital number, since it uses as much as digits as its factorization.

213664079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6265.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 213664079 is about 14617.2527856639. The cubic root of 213664079 is about 597.8292661807.

The spelling of 213664079 in words is "two hundred thirteen million, six hundred sixty-four thousand, seventy-nine".