627627620491 has 4 divisors (see below), whose sum is σ = 627659897112. Its totient is φ = 627595343872.

The previous prime is 627627620467. The next prime is 627627620509. The reversal of 627627620491 is 194026726726.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 627627620491 - 2⁹ = 627627619979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (627627626491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16109125 + ... + 16148038.

It is an arithmetic number, because the mean of its divisors is an integer number (156914974278).

Almost surely, 2^627627620491 is an apocalyptic number.

627627620491 is a deficient number, since it is larger than the sum of its proper divisors (32276621).

627627620491 is a wasteful number, since it uses less digits than its factorization.

627627620491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32276620.

The product of its (nonzero) digits is 3048192, while the sum is 52.

The spelling of 627627620491 in words is "six hundred twenty-seven billion, six hundred twenty-seven million, six hundred twenty thousand, four hundred ninety-one".