627799985 has 4 divisors (see below), whose sum is σ = 753359988. Its totient is φ = 502239984.

The previous prime is 627799969. The next prime is 627799993. The reversal of 627799985 is 589997726.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 589997726 = 2 ⋅294998863.

It can be written as a sum of positive squares in 2 ways, for example, as 99121936 + 528678049 = 9956^2 + 22993^2 .

It is a cyclic number.

It is not a de Polignac number, because 627799985 - 2⁴ = 627799969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62779994 + ... + 62780003.

It is an arithmetic number, because the mean of its divisors is an integer number (188339997).

Almost surely, 2^627799985 is an apocalyptic number.

It is an amenable number.

627799985 is a deficient number, since it is larger than the sum of its proper divisors (125560003).

627799985 is a wasteful number, since it uses less digits than its factorization.

627799985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125560002.

The product of its digits is 17146080, while the sum is 62.

The square root of 627799985 is about 25055.9371207704. The cubic root of 627799985 is about 856.2628466291.

The spelling of 627799985 in words is "six hundred twenty-seven million, seven hundred ninety-nine thousand, nine hundred eighty-five".