626834689 has 6 divisors (see below), whose sum is σ = 678762006. Its totient is φ = 578616480.

The previous prime is 626834671. The next prime is 626834701. The reversal of 626834689 is 986438626.

It can be written as a sum of positive squares in 3 ways, for example, as 52417600 + 574417089 = 7240^2 + 23967^2 .

It is not a de Polignac number, because 626834689 - 2²⁵ = 593280257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (626834639) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1854372 + ... + 1854709.

It is an arithmetic number, because the mean of its divisors is an integer number (113127001).

Almost surely, 2^626834689 is an apocalyptic number.

It is an amenable number.

626834689 is a deficient number, since it is larger than the sum of its proper divisors (51927317).

626834689 is a wasteful number, since it uses less digits than its factorization.

626834689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3709107 (or 3709094 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 52.

The square root of 626834689 is about 25036.6668907824. Note that the first 3 decimals coincide. The cubic root of 626834689 is about 855.8237624666.

The spelling of 626834689 in words is "six hundred twenty-six million, eight hundred thirty-four thousand, six hundred eighty-nine".