13623973 has 8 divisors (see below), whose sum is σ = 15342336. Its totient is φ = 11985600.

The previous prime is 13623959. The next prime is 13623979. The reversal of 13623973 is 37932631.

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

It is not a de Polignac number, because 13623973 - 2⁹ = 13623461 is a prime.

It is a super-2 number, since 2×13623973² = 371225280609458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13623979) 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, 19636 + ... + 20317.

It is an arithmetic number, because the mean of its divisors is an integer number (1917792).

Almost surely, 2^13623973 is an apocalyptic number.

It is an amenable number.

13623973 is a deficient number, since it is larger than the sum of its proper divisors (1718363).

13623973 is a wasteful number, since it uses less digits than its factorization.

13623973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39995.

The product of its digits is 20412, while the sum is 34.

The square root of 13623973 is about 3691.0666480030. The cubic root of 13623973 is about 238.8368078841.

It can be divided in two parts, 1362 and 3973, that added together give a palindrome (5335).

The spelling of 13623973 in words is "thirteen million, six hundred twenty-three thousand, nine hundred seventy-three".