634628 has 6 divisors (see below), whose sum is σ = 1110606. Its totient is φ = 317312.

The previous prime is 634609. The next prime is 634643. The reversal of 634628 is 826436.

It can be written as a sum of positive squares in only one way, i.e., 611524 + 23104 = 782^2 + 152^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 634628.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79325 + ... + 79332.

It is an arithmetic number, because the mean of its divisors is an integer number (185101).

2⁶³⁴⁶²⁸ is an apocalyptic number.

It is an amenable number.

634628 is a deficient number, since it is larger than the sum of its proper divisors (475978).

634628 is a wasteful number, since it uses less digits than its factorization.

634628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158661 (or 158659 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 634628 is about 796.6354247710. The cubic root of 634628 is about 85.9355926629.

The spelling of 634628 in words is "six hundred thirty-four thousand, six hundred twenty-eight".