20624061 has 4 divisors (see below), whose sum is σ = 27498752. Its totient is φ = 13749372.

The previous prime is 20624041. The next prime is 20624069. The reversal of 20624061 is 16042602.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20624061 - 2⁶ = 20623997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20624069) 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, 3437341 + ... + 3437346.

It is an arithmetic number, because the mean of its divisors is an integer number (6874688).

Almost surely, 2^20624061 is an apocalyptic number.

It is an amenable number.

20624061 is a deficient number, since it is larger than the sum of its proper divisors (6874691).

20624061 is an equidigital number, since it uses as much as digits as its factorization.

20624061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6874690.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 20624061 is about 4541.3721494720. The cubic root of 20624061 is about 274.2361657537.

Adding to 20624061 its reverse (16042602), we get a palindrome (36666663).

The spelling of 20624061 in words is "twenty million, six hundred twenty-four thousand, sixty-one".