997627 has 2 divisors, whose sum is σ = 997628. Its totient is φ = 997626.

The previous prime is 997609. The next prime is 997637. The reversal of 997627 is 726799.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-997627 is a prime.

It is a super-2 number, since 2×997627² = 1990519262258, which contains 22 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 997627.

It is not a weakly prime, because it can be changed into another prime (997637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498813 + 498814.

It is an arithmetic number, because the mean of its divisors is an integer number (498814).

2⁹⁹⁷⁶²⁷ is an apocalyptic number.

997627 is a deficient number, since it is larger than the sum of its proper divisors (1).

997627 is an equidigital number, since it uses as much as digits as its factorization.

997627 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47628, while the sum is 40.

The square root of 997627 is about 998.8127952725. The cubic root of 997627 is about 99.9208373493.

The spelling of 997627 in words is "nine hundred ninety-seven thousand, six hundred twenty-seven".