123776604 has 72 divisors (see below), whose sum is σ = 362963328. Its totient is φ = 34832160.

The previous prime is 123776591. The next prime is 123776617. The reversal of 123776604 is 406677321.

123776604 is a `hidden beast` number, since 12 + 37 + 7 + 6 + 604 = 666.

It is an interprime number because it is at equal distance from previous prime (123776591) and next prime (123776617).

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, 13219 + ... + 20549.

Almost surely, 2^123776604 is an apocalyptic number.

123776604 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 123776604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181481664).

123776604 is an abundant number, since it is smaller than the sum of its proper divisors (239186724).

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

123776604 is a wasteful number, since it uses less digits than its factorization.

123776604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7415 (or 7410 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 123776604 is about 11125.4934272598. The cubic root of 123776604 is about 498.3634546159.

It can be divided in two parts, 12377 and 6604, that added together give a palindrome (18981).

The spelling of 123776604 in words is "one hundred twenty-three million, seven hundred seventy-six thousand, six hundred four".