123664501 has 8 divisors (see below), whose sum is σ = 126067104. Its totient is φ = 121285200.

The previous prime is 123664451. The next prime is 123664523. The reversal of 123664501 is 105466321.

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 123664501 - 2¹⁵ = 123631733 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123664501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123664561) 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, 5086 + ... + 16528.

It is an arithmetic number, because the mean of its divisors is an integer number (15758388).

Almost surely, 2^123664501 is an apocalyptic number.

It is an amenable number.

123664501 is a deficient number, since it is larger than the sum of its proper divisors (2402603).

123664501 is a wasteful number, since it uses less digits than its factorization.

123664501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11651.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 123664501 is about 11120.4541723798. The cubic root of 123664501 is about 498.2129552179.

The spelling of 123664501 in words is "one hundred twenty-three million, six hundred sixty-four thousand, five hundred one".