626397 has 4 divisors (see below), whose sum is σ = 835200. Its totient is φ = 417596.

The previous prime is 626393. The next prime is 626443. The reversal of 626397 is 793626.

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 626397 - 2² = 626393 is a prime.

It is a d-powerful number, because it can be written as 6⁶ + 2¹⁹ + 3⁷ + 6⁶ + 9⁴ + 7² .

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (626393) 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, 104397 + ... + 104402.

It is an arithmetic number, because the mean of its divisors is an integer number (208800).

2⁶²⁶³⁹⁷ is an apocalyptic number.

It is an amenable number.

626397 is a deficient number, since it is larger than the sum of its proper divisors (208803).

626397 is a wasteful number, since it uses less digits than its factorization.

626397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208802.

The product of its digits is 13608, while the sum is 33.

The square root of 626397 is about 791.4524622490. The cubic root of 626397 is about 85.5624522342.

The spelling of 626397 in words is "six hundred twenty-six thousand, three hundred ninety-seven".