634900023 has 12 divisors (see below), whose sum is σ = 917299968. Its totient is φ = 423164160.

The previous prime is 634900009. The next prime is 634900033. The reversal of 634900023 is 320009436.

634900023 is a `hidden beast` number, since 634 + 9 + 0 + 0 + 0 + 23 = 666.

It is not a de Polignac number, because 634900023 - 2⁶ = 634899959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 634900023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634900033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57738 + ... + 67848.

It is an arithmetic number, because the mean of its divisors is an integer number (76441664).

Almost surely, 2^634900023 is an apocalyptic number.

634900023 is a deficient number, since it is larger than the sum of its proper divisors (282399945).

634900023 is a wasteful number, since it uses less digits than its factorization.

634900023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17094 (or 17091 counting only the distinct ones).

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

The square root of 634900023 is about 25197.2225255086. Note that the first 3 decimals coincide. The cubic root of 634900023 is about 859.4786920839.

Adding to 634900023 its reverse (320009436), we get a palindrome (954909459).

The spelling of 634900023 in words is "six hundred thirty-four million, nine hundred thousand, twenty-three".