20616607 has 8 divisors (see below), whose sum is σ = 22552272. Its totient is φ = 18691200.

The previous prime is 20616601. The next prime is 20616623. The reversal of 20616607 is 70661602.

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

It is a de Polignac number, because none of the positive numbers 2^k-20616607 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 (20616601) 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, 2007 + ... + 6727.

It is an arithmetic number, because the mean of its divisors is an integer number (2819034).

Almost surely, 2^20616607 is an apocalyptic number.

20616607 is a deficient number, since it is larger than the sum of its proper divisors (1935665).

20616607 is a wasteful number, since it uses less digits than its factorization.

20616607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5129.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 20616607 is about 4540.5513982335. The cubic root of 20616607 is about 274.2031233977.

It can be divided in two parts, 2061 and 6607, that added together give a palindrome (8668).

The spelling of 20616607 in words is "twenty million, six hundred sixteen thousand, six hundred seven".