623991114 has 20 divisors (see below), whose sum is σ = 1398202674. Its totient is φ = 207996984.

The previous prime is 623991107. The next prime is 623991163. The reversal of 623991114 is 411199326.

It is a happy number.

623991114 is a `hidden beast` number, since 623 + 9 + 9 + 11 + 14 = 666.

It can be written as a sum of positive squares in only one way, i.e., 614792025 + 9199089 = 24795^2 + 3033^2 .

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 1925737 + ... + 1926060.

Almost surely, 2^623991114 is an apocalyptic number.

623991114 is an abundant number, since it is smaller than the sum of its proper divisors (774211560).

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

623991114 is a wasteful number, since it uses less digits than its factorization.

623991114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3851811 (or 3851802 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 623991114 is about 24979.8141306135. The cubic root of 623991114 is about 854.5276800335.

The spelling of 623991114 in words is "six hundred twenty-three million, nine hundred ninety-one thousand, one hundred fourteen".