23070621 has 12 divisors (see below), whose sum is σ = 35783232. Its totient is φ = 13183128.

The previous prime is 23070599. The next prime is 23070637. The reversal of 23070621 is 12607032.

It is a happy number.

It is not a de Polignac number, because 23070621 - 2⁵ = 23070589 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23070221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78325 + ... + 78618.

It is an arithmetic number, because the mean of its divisors is an integer number (2981936).

Almost surely, 2^23070621 is an apocalyptic number.

23070621 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23070621 is a deficient number, since it is larger than the sum of its proper divisors (12712611).

23070621 is a wasteful number, since it uses less digits than its factorization.

23070621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156960 (or 156953 counting only the distinct ones).

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

The square root of 23070621 is about 4803.1886284009. The cubic root of 23070621 is about 284.6774683112.

Adding to 23070621 its reverse (12607032), we get a palindrome (35677653).

The spelling of 23070621 in words is "twenty-three million, seventy thousand, six hundred twenty-one".