634228807 has 2 divisors, whose sum is σ = 634228808. Its totient is φ = 634228806.

The previous prime is 634228799. The next prime is 634228909. The reversal of 634228807 is 708822436.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 634228807 - 2³ = 634228799 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 634228807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634222807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317114403 + 317114404.

It is an arithmetic number, because the mean of its divisors is an integer number (317114404).

Almost surely, 2^634228807 is an apocalyptic number.

634228807 is a deficient number, since it is larger than the sum of its proper divisors (1).

634228807 is an equidigital number, since it uses as much as digits as its factorization.

634228807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 634228807 is about 25183.8997575832. The cubic root of 634228807 is about 859.1757051325.

It can be divided in two parts, 634 and 228807, that added together give a square (229441 = 479²).

The spelling of 634228807 in words is "six hundred thirty-four million, two hundred twenty-eight thousand, eight hundred seven".