623705130 has 32 divisors (see below), whose sum is σ = 1663214400. Its totient is φ = 166321296.

The previous prime is 623705101. The next prime is 623705141. The reversal of 623705130 is 31507326.

It is a happy number.

623705130 is a `hidden beast` number, since 623 + 7 + 0 + 5 + 1 + 30 = 666.

623705130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 623705094 and 623705103.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1154740 + ... + 1155279.

It is an arithmetic number, because the mean of its divisors is an integer number (51975450).

Almost surely, 2^623705130 is an apocalyptic number.

623705130 is an abundant number, since it is smaller than the sum of its proper divisors (1039509270).

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

623705130 is a wasteful number, since it uses less digits than its factorization.

623705130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2310035 (or 2310029 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 623705130 is about 24974.0891725804. The cubic root of 623705130 is about 854.3971126891.

The spelling of 623705130 in words is "six hundred twenty-three million, seven hundred five thousand, one hundred thirty".