20657627 has 2 divisors, whose sum is σ = 20657628. Its totient is φ = 20657626.

The previous prime is 20657603. The next prime is 20657653. The reversal of 20657627 is 72675602.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20657627 - 2²² = 16463323 is a prime.

It is a super-2 number, since 2×20657627² = 853475106542258, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20657677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10328813 + 10328814.

It is an arithmetic number, because the mean of its divisors is an integer number (10328814).

Almost surely, 2^20657627 is an apocalyptic number.

20657627 is a deficient number, since it is larger than the sum of its proper divisors (1).

20657627 is an equidigital number, since it uses as much as digits as its factorization.

20657627 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 20657627 is about 4545.0662261402. The cubic root of 20657627 is about 274.3848597457.

The spelling of 20657627 in words is "twenty million, six hundred fifty-seven thousand, six hundred twenty-seven".