634127 has 4 divisors (see below), whose sum is σ = 682920. Its totient is φ = 585336.

The previous prime is 634103. The next prime is 634141. The reversal of 634127 is 721436.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634127 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24377 + ... + 24402.

It is an arithmetic number, because the mean of its divisors is an integer number (170730).

2⁶³⁴¹²⁷ is an apocalyptic number.

634127 is a deficient number, since it is larger than the sum of its proper divisors (48793).

634127 is a wasteful number, since it uses less digits than its factorization.

634127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48792.

The product of its digits is 1008, while the sum is 23.

The square root of 634127 is about 796.3209152094. The cubic root of 634127 is about 85.9129730777.

The spelling of 634127 in words is "six hundred thirty-four thousand, one hundred twenty-seven".