123080661 has 16 divisors (see below), whose sum is σ = 198918720. Its totient is φ = 74594160.

The previous prime is 123080627. The next prime is 123080687. The reversal of 123080661 is 166080321.

It is not a de Polignac number, because 123080661 - 2⁷ = 123080533 is a prime.

It is a super-2 number, since 2×123080661² = 30297698224393842, which contains 22 as substring.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123080161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206910 + ... + 207503.

It is an arithmetic number, because the mean of its divisors is an integer number (12432420).

Almost surely, 2^123080661 is an apocalyptic number.

123080661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123080661 is a deficient number, since it is larger than the sum of its proper divisors (75838059).

123080661 is a wasteful number, since it uses less digits than its factorization.

123080661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414433 (or 414427 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 123080661 is about 11094.1723891420. The cubic root of 123080661 is about 497.4276702672.

The spelling of 123080661 in words is "one hundred twenty-three million, eighty thousand, six hundred sixty-one".