20626687 has 8 divisors (see below), whose sum is σ = 21612032. Its totient is φ = 19661400.

The previous prime is 20626679. The next prime is 20626693. The reversal of 20626687 is 78662602.

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

It is a cyclic number.

It is not a de Polignac number, because 20626687 - 2³ = 20626679 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20626637) 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, 2889 + ... + 7042.

It is an arithmetic number, because the mean of its divisors is an integer number (2701504).

Almost surely, 2^20626687 is an apocalyptic number.

20626687 is a deficient number, since it is larger than the sum of its proper divisors (985345).

20626687 is an equidigital number, since it uses as much as digits as its factorization.

20626687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10029.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 20626687 is about 4541.6612599356. The cubic root of 20626687 is about 274.2478044834.

The spelling of 20626687 in words is "twenty million, six hundred twenty-six thousand, six hundred eighty-seven".