699634634 has 4 divisors (see below), whose sum is σ = 1049451954. Its totient is φ = 349817316.

The previous prime is 699634633. The next prime is 699634651. The reversal of 699634634 is 436436996.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 673143025 + 26491609 = 25945^2 + 5147^2 .

It is not an unprimeable number, because it can be changed into a prime (699634633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174908657 + ... + 174908660.

Almost surely, 2^699634634 is an apocalyptic number.

699634634 is a deficient number, since it is larger than the sum of its proper divisors (349817320).

699634634 is a wasteful number, since it uses less digits than its factorization.

699634634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349817319.

The product of its digits is 2519424, while the sum is 50.

The square root of 699634634 is about 26450.6074410400. The cubic root of 699634634 is about 887.7494939369.

The spelling of 699634634 in words is "six hundred ninety-nine million, six hundred thirty-four thousand, six hundred thirty-four".