123665630 has 24 divisors (see below), whose sum is σ = 244676376. Its totient is φ = 44968880.

The previous prime is 123665621. The next prime is 123665651. The reversal of 123665630 is 36566321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49892 + ... + 52311.

It is an arithmetic number, because the mean of its divisors is an integer number (10194849).

Almost surely, 2^123665630 is an apocalyptic number.

123665630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123665630 is a deficient number, since it is larger than the sum of its proper divisors (121010746).

123665630 is a wasteful number, since it uses less digits than its factorization.

123665630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102232 (or 102221 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 123665630 is about 11120.5049345792. The cubic root of 123665630 is about 498.2144713649.

It can be divided in two parts, 1236 and 65630, that added together give a palindrome (66866).

The spelling of 123665630 in words is "one hundred twenty-three million, six hundred sixty-five thousand, six hundred thirty".