634214465 has 4 divisors (see below), whose sum is σ = 761057364. Its totient is φ = 507371568.

The previous prime is 634214459. The next prime is 634214467. The reversal of 634214465 is 564412436.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 224070961 + 410143504 = 14969^2 + 20252^2 .

It is a cyclic number.

It is not a de Polignac number, because 634214465 - 2⁸ = 634214209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634214467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63421442 + ... + 63421451.

It is an arithmetic number, because the mean of its divisors is an integer number (190264341).

Almost surely, 2^634214465 is an apocalyptic number.

It is an amenable number.

634214465 is a deficient number, since it is larger than the sum of its proper divisors (126842899).

634214465 is a wasteful number, since it uses less digits than its factorization.

634214465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126842898.

The product of its digits is 69120, while the sum is 35.

The square root of 634214465 is about 25183.6150105580. The cubic root of 634214465 is about 859.1692288206.

The spelling of 634214465 in words is "six hundred thirty-four million, two hundred fourteen thousand, four hundred sixty-five".