23700621 has 8 divisors (see below), whose sum is σ = 36115264. Its totient is φ = 13543200.

The previous prime is 23700587. The next prime is 23700623. The reversal of 23700621 is 12600732.

It is a happy number.

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

It is not a de Polignac number, because 23700621 - 2¹³ = 23692429 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1128601 = 23700621 / (2 + 3 + 7 + 0 + 0 + 6 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23700623) 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, 564280 + ... + 564321.

It is an arithmetic number, because the mean of its divisors is an integer number (4514408).

Almost surely, 2^23700621 is an apocalyptic number.

23700621 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23700621 is a deficient number, since it is larger than the sum of its proper divisors (12414643).

23700621 is a wasteful number, since it uses less digits than its factorization.

23700621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128611.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 23700621 is about 4868.3283578658. The cubic root of 23700621 is about 287.2455053489.

The spelling of 23700621 in words is "twenty-three million, seven hundred thousand, six hundred twenty-one".