123660647 has 8 divisors (see below), whose sum is σ = 138040320. Its totient is φ = 109803960.

The previous prime is 123660631. The next prime is 123660653. The reversal of 123660647 is 746066321.

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

It is a cyclic number.

It is not a de Polignac number, because 123660647 - 2⁴ = 123660631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123662647) 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, 130247 + ... + 131192.

It is an arithmetic number, because the mean of its divisors is an integer number (17255040).

Almost surely, 2^123660647 is an apocalyptic number.

123660647 is a deficient number, since it is larger than the sum of its proper divisors (14379673).

123660647 is a wasteful number, since it uses less digits than its factorization.

123660647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261493.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 123660647 is about 11120.2808867402. The cubic root of 123660647 is about 498.2077795675.

The spelling of 123660647 in words is "one hundred twenty-three million, six hundred sixty thousand, six hundred forty-seven".