626317121 has 4 divisors (see below), whose sum is σ = 659281200. Its totient is φ = 593353044.

The previous prime is 626317079. The next prime is 626317123. The reversal of 626317121 is 121713626.

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 626317121 - 2¹⁸ = 626054977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (626317123) 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, 16482011 + ... + 16482048.

It is an arithmetic number, because the mean of its divisors is an integer number (164820300).

Almost surely, 2^626317121 is an apocalyptic number.

It is an amenable number.

626317121 is a deficient number, since it is larger than the sum of its proper divisors (32964079).

626317121 is a wasteful number, since it uses less digits than its factorization.

626317121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32964078.

The product of its digits is 3024, while the sum is 29.

The square root of 626317121 is about 25026.3285561426. The cubic root of 626317121 is about 855.5881506600.

The spelling of 626317121 in words is "six hundred twenty-six million, three hundred seventeen thousand, one hundred twenty-one".