639746322022297 has 64 divisors (see below), whose sum is σ = 763180042240000. Its totient is φ = 524947567592448.

The previous prime is 639746322022273. The next prime is 639746322022303. The reversal of 639746322022297 is 792220223647936.

It is a happy number.

It is a Cunningham number, because it is equal to 86166³+1.

It is not a de Polignac number, because 639746322022297 - 2³¹ = 639744174538649 is a prime.

It is a taxicab number since it can be written as a sum of two cubes in more than one way. Here 639746322022297 = 1³ + 86166³ = 50313³ + 80020³.

It is not an unprimeable number, because it can be changed into a prime (639746322022217) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2048808979 + ... + 2049121207.

It is an arithmetic number, because the mean of its divisors is an integer number (11924688160000).

Almost surely, 2^{639746322022297} is an apocalyptic number.

It is an amenable number.

639746322022297 is a deficient number, since it is larger than the sum of its proper divisors (123433720217703).

639746322022297 is a wasteful number, since it uses less digits than its factorization.

639746322022297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312990.

The product of its (nonzero) digits is 164602368, while the sum is 64.

The spelling of 639746322022297 in words is "six hundred thirty-nine trillion, seven hundred forty-six billion, three hundred twenty-two million, twenty-two thousand, two hundred ninety-seven".