634923 has 24 divisors (see below), whose sum is σ = 998400. Its totient is φ = 387504.

The previous prime is 634903. The next prime is 634927. The reversal of 634923 is 329436.

634923 is a `hidden beast` number, since 634 + 9 + 23 = 666.

It is not a de Polignac number, because 634923 - 2⁵ = 634891 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (634927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7998 + ... + 8076.

It is an arithmetic number, because the mean of its divisors is an integer number (41600).

2⁶³⁴⁹²³ is an apocalyptic number.

634923 is a deficient number, since it is larger than the sum of its proper divisors (363477).

634923 is a wasteful number, since it uses less digits than its factorization.

634923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 148 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 634923 is about 796.8205569637. The cubic root of 634923 is about 85.9489060122.

The spelling of 634923 in words is "six hundred thirty-four thousand, nine hundred twenty-three".