634155 has 16 divisors (see below), whose sum is σ = 1031424. Its totient is φ = 332640.

The previous prime is 634141. The next prime is 634157. The reversal of 634155 is 551436.

It is not a de Polignac number, because 634155 - 2⁶ = 634091 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 690 + ... + 1320.

It is an arithmetic number, because the mean of its divisors is an integer number (64464).

2⁶³⁴¹⁵⁵ is an apocalyptic number.

634155 is a deficient number, since it is larger than the sum of its proper divisors (397269).

634155 is a wasteful number, since it uses less digits than its factorization.

634155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706.

The product of its digits is 1800, while the sum is 24.

The square root of 634155 is about 796.3384958672. The cubic root of 634155 is about 85.9142375604.

The spelling of 634155 in words is "six hundred thirty-four thousand, one hundred fifty-five".