634623601 has 4 divisors (see below), whose sum is σ = 634720752. Its totient is φ = 634526452.

The previous prime is 634623589. The next prime is 634623629. The reversal of 634623601 is 106326436.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 634623601 - 2⁵ = 634623569 is a prime.

It is a super-2 number, since 2×634623601² = 805494229892414402, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634623641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38011 + ... + 52096.

It is an arithmetic number, because the mean of its divisors is an integer number (158680188).

Almost surely, 2^634623601 is an apocalyptic number.

It is an amenable number.

634623601 is a deficient number, since it is larger than the sum of its proper divisors (97151).

634623601 is an equidigital number, since it uses as much as digits as its factorization.

634623601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97150.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 634623601 is about 25191.7367602950. The cubic root of 634623601 is about 859.3539410483.

The spelling of 634623601 in words is "six hundred thirty-four million, six hundred twenty-three thousand, six hundred one".