20617627 has 2 divisors, whose sum is σ = 20617628. Its totient is φ = 20617626.

The previous prime is 20617607. The next prime is 20617643. The reversal of 20617627 is 72671602.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20617627 is a prime.

It is a super-2 number, since 2×20617627² = 850173086222258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20617607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10308813 + 10308814.

It is an arithmetic number, because the mean of its divisors is an integer number (10308814).

Almost surely, 2^20617627 is an apocalyptic number.

20617627 is a deficient number, since it is larger than the sum of its proper divisors (1).

20617627 is an equidigital number, since it uses as much as digits as its factorization.

20617627 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 20617627 is about 4540.6637180042. The cubic root of 20617627 is about 274.2076453603.

The spelling of 20617627 in words is "twenty million, six hundred seventeen thousand, six hundred twenty-seven".