7638634 has 8 divisors (see below), whose sum is σ = 11535300. Its totient is φ = 3793536.

The previous prime is 7638619. The next prime is 7638641. The reversal of 7638634 is 4368367.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7006609 + 632025 = 2647^2 + 795^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 7638593 and 7638602.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12519 + ... + 13114.

Almost surely, 2^7638634 is an apocalyptic number.

7638634 is a deficient number, since it is larger than the sum of its proper divisors (3896666).

7638634 is a wasteful number, since it uses less digits than its factorization.

7638634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25784.

The product of its digits is 72576, while the sum is 37.

The square root of 7638634 is about 2763.8078804432. The cubic root of 7638634 is about 196.9421012223.

The spelling of 7638634 in words is "seven million, six hundred thirty-eight thousand, six hundred thirty-four".