123708564 has 72 divisors (see below), whose sum is σ = 358857408. Its totient is φ = 35199360.

The previous prime is 123708547. The next prime is 123708583. The reversal of 123708564 is 465807321.

123708564 is a `hidden beast` number, since 1 + 23 + 70 + 8 + 564 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69939 + ... + 71685.

Almost surely, 2^123708564 is an apocalyptic number.

123708564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123708564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179428704).

123708564 is an abundant number, since it is smaller than the sum of its proper divisors (235148844).

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

123708564 is a wasteful number, since it uses less digits than its factorization.

123708564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045 (or 2040 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 123708564 is about 11122.4351650167. The cubic root of 123708564 is about 498.2721210805.

The spelling of 123708564 in words is "one hundred twenty-three million, seven hundred eight thousand, five hundred sixty-four".