626274349 has 2 divisors, whose sum is σ = 626274350. Its totient is φ = 626274348.

The previous prime is 626274347. The next prime is 626274361. The reversal of 626274349 is 943472626.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 622851849 + 3422500 = 24957^2 + 1850^2 .

It is a cyclic number.

It is not a de Polignac number, because 626274349 - 2¹ = 626274347 is a prime.

Together with 626274347, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (626274347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313137174 + 313137175.

It is an arithmetic number, because the mean of its divisors is an integer number (313137175).

Almost surely, 2^626274349 is an apocalyptic number.

It is an amenable number.

626274349 is a deficient number, since it is larger than the sum of its proper divisors (1).

626274349 is an equidigital number, since it uses as much as digits as its factorization.

626274349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 43.

The square root of 626274349 is about 25025.4740015049. The cubic root of 626274349 is about 855.5686738123.

The spelling of 626274349 in words is "six hundred twenty-six million, two hundred seventy-four thousand, three hundred forty-nine".