634860 has 36 divisors (see below), whose sum is σ = 1926288. Its totient is φ = 169248.

The previous prime is 634859. The next prime is 634861. The reversal of 634860 is 68436.

It is an interprime number because it is at equal distance from previous prime (634859) and next prime (634861).

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (634861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1584 + ... + 1943.

It is an arithmetic number, because the mean of its divisors is an integer number (53508).

2⁶³⁴⁸⁶⁰ is an apocalyptic number.

634860 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

634860 is an abundant number, since it is smaller than the sum of its proper divisors (1291428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

634860 is a wasteful number, since it uses less digits than its factorization.

634860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3542 (or 3537 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 634860 is about 796.7810238704. The cubic root of 634860 is about 85.9460631687.

The spelling of 634860 in words is "six hundred thirty-four thousand, eight hundred sixty".