123660993 has 8 divisors (see below), whose sum is σ = 169337728. Its totient is φ = 80212464.

The previous prime is 123660989. The next prime is 123661033. The reversal of 123660993 is 399066321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123660993 - 2² = 123660989 is a prime.

It is a super-4 number, since 4×123660993⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123660973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 556921 + ... + 557142.

It is an arithmetic number, because the mean of its divisors is an integer number (21167216).

Almost surely, 2^123660993 is an apocalyptic number.

It is an amenable number.

123660993 is a deficient number, since it is larger than the sum of its proper divisors (45676735).

123660993 is a wasteful number, since it uses less digits than its factorization.

123660993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114103.

The product of its (nonzero) digits is 52488, while the sum is 39.

The square root of 123660993 is about 11120.2964438903. The cubic root of 123660993 is about 498.2082442255.

The spelling of 123660993 in words is "one hundred twenty-three million, six hundred sixty thousand, nine hundred ninety-three".