668236597 has 4 divisors (see below), whose sum is σ = 763698976. Its totient is φ = 572774220.

The previous prime is 668236579. The next prime is 668236601. The reversal of 668236597 is 795632866.

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 668236597 - 2¹¹ = 668234549 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 (668236097) 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, 47731179 + ... + 47731192.

It is an arithmetic number, because the mean of its divisors is an integer number (190924744).

Almost surely, 2^668236597 is an apocalyptic number.

It is an amenable number.

668236597 is a deficient number, since it is larger than the sum of its proper divisors (95462379).

668236597 is an equidigital number, since it uses as much as digits as its factorization.

668236597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95462378.

The product of its digits is 3265920, while the sum is 52.

The square root of 668236597 is about 25850.2726678076. The cubic root of 668236597 is about 874.2656574002.

The spelling of 668236597 in words is "six hundred sixty-eight million, two hundred thirty-six thousand, five hundred ninety-seven".