634899 has 16 divisors (see below), whose sum is σ = 915840. Its totient is φ = 389760.

The previous prime is 634891. The next prime is 634901. The reversal of 634899 is 998436.

It is not a de Polignac number, because 634899 - 2³ = 634891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (634891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2904 + ... + 3114.

It is an arithmetic number, because the mean of its divisors is an integer number (57240).

2⁶³⁴⁸⁹⁹ is an apocalyptic number.

634899 is a deficient number, since it is larger than the sum of its proper divisors (280941).

634899 is a wasteful number, since it uses less digits than its factorization.

634899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290.

The product of its digits is 46656, while the sum is 39.

The square root of 634899 is about 796.8054969690. The cubic root of 634899 is about 85.9478230464.

The spelling of 634899 in words is "six hundred thirty-four thousand, eight hundred ninety-nine".