634324653 has 24 divisors (see below), whose sum is σ = 941563896. Its totient is φ = 411264000.

The previous prime is 634324651. The next prime is 634324661. The reversal of 634324653 is 356423436.

It can be written as a sum of positive squares in 4 ways, for example, as 92505924 + 541818729 = 9618^2 + 23277^2 .

It is not a de Polignac number, because 634324653 - 2¹ = 634324651 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634324651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121803 + ... + 126903.

It is an arithmetic number, because the mean of its divisors is an integer number (39231829).

Almost surely, 2^634324653 is an apocalyptic number.

It is an amenable number.

634324653 is a deficient number, since it is larger than the sum of its proper divisors (307239243).

634324653 is a wasteful number, since it uses less digits than its factorization.

634324653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5485 (or 5482 counting only the distinct ones).

The product of its digits is 155520, while the sum is 36.

The square root of 634324653 is about 25185.8026078186. The cubic root of 634324653 is about 859.2189831030.

The spelling of 634324653 in words is "six hundred thirty-four million, three hundred twenty-four thousand, six hundred fifty-three".