396642708617 has 4 divisors (see below), whose sum is σ = 396671301120. Its totient is φ = 396614116116.

The previous prime is 396642708593. The next prime is 396642708689. The reversal of 396642708617 is 716807246693.

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 396642708617 - 2³⁸ = 121764801673 is a prime.

It is a super-3 number, since 3×396642708617³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396602708617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14275433 + ... + 14303190.

It is an arithmetic number, because the mean of its divisors is an integer number (99167825280).

Almost surely, 2^396642708617 is an apocalyptic number.

It is an amenable number.

396642708617 is a deficient number, since it is larger than the sum of its proper divisors (28592503).

396642708617 is a wasteful number, since it uses less digits than its factorization.

396642708617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28592502.

The product of its (nonzero) digits is 18289152, while the sum is 59.

The spelling of 396642708617 in words is "three hundred ninety-six billion, six hundred forty-two million, seven hundred eight thousand, six hundred seventeen".