15648923 has 4 divisors (see below), whose sum is σ = 15656880. Its totient is φ = 15640968.

The previous prime is 15648911. The next prime is 15648929. The reversal of 15648923 is 32984651.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 15648923 - 2⁴ = 15648907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15648929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1361 + ... + 5757.

It is an arithmetic number, because the mean of its divisors is an integer number (3914220).

Almost surely, 2^15648923 is an apocalyptic number.

15648923 is a deficient number, since it is larger than the sum of its proper divisors (7957).

15648923 is an equidigital number, since it uses as much as digits as its factorization.

15648923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7956.

The product of its digits is 51840, while the sum is 38.

The square root of 15648923 is about 3955.8719645610. The cubic root of 15648923 is about 250.1275242725.

The spelling of 15648923 in words is "fifteen million, six hundred forty-eight thousand, nine hundred twenty-three".