123579620 has 12 divisors (see below), whose sum is σ = 259517244. Its totient is φ = 49431840.

The previous prime is 123579587. The next prime is 123579653. The reversal of 123579620 is 26975321.

It is an interprime number because it is at equal distance from previous prime (123579587) and next prime (123579653).

It can be written as a sum of positive squares in 2 ways, for example, as 70930084 + 52649536 = 8422^2 + 7256^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3089471 + ... + 3089510.

It is an arithmetic number, because the mean of its divisors is an integer number (21626437).

Almost surely, 2^123579620 is an apocalyptic number.

123579620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123579620 is an abundant number, since it is smaller than the sum of its proper divisors (135937624).

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

123579620 is a wasteful number, since it uses less digits than its factorization.

123579620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6178990 (or 6178988 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 123579620 is about 11116.6370814199. The cubic root of 123579620 is about 498.0989411108.

The spelling of 123579620 in words is "one hundred twenty-three million, five hundred seventy-nine thousand, six hundred twenty".