634142637 has 12 divisors (see below), whose sum is σ = 955809504. Its totient is φ = 404380680.

The previous prime is 634142627. The next prime is 634142657. The reversal of 634142637 is 736241436.

It is a happy number.

634142637 is a `hidden beast` number, since 6 + 3 + 4 + 14 + 2 + 637 = 666.

It is not a de Polignac number, because 634142637 - 2¹² = 634138541 is a prime.

It is a super-2 number, since 2×634142637² = 804273768122627538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634142627) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1531539 + ... + 1531952.

It is an arithmetic number, because the mean of its divisors is an integer number (79650792).

Almost surely, 2^634142637 is an apocalyptic number.

It is an amenable number.

634142637 is a deficient number, since it is larger than the sum of its proper divisors (321666867).

634142637 is a wasteful number, since it uses less digits than its factorization.

634142637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3063520 (or 3063517 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 634142637 is about 25182.1888842094. The cubic root of 634142637 is about 859.1367925073.

The spelling of 634142637 in words is "six hundred thirty-four million, one hundred forty-two thousand, six hundred thirty-seven".