627791089 has 4 divisors (see below), whose sum is σ = 628891120. Its totient is φ = 626691060.

The previous prime is 627791083. The next prime is 627791189. The reversal of 627791089 is 980197726.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 627791089 - 2⁹ = 627790577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (627791083) 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, 549159 + ... + 550300.

It is an arithmetic number, because the mean of its divisors is an integer number (157222780).

Almost surely, 2^627791089 is an apocalyptic number.

It is an amenable number.

627791089 is a deficient number, since it is larger than the sum of its proper divisors (1100031).

627791089 is a wasteful number, since it uses less digits than its factorization.

627791089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100030.

The product of its (nonzero) digits is 381024, while the sum is 49.

The square root of 627791089 is about 25055.7595973461. The cubic root of 627791089 is about 856.2588021615.

The spelling of 627791089 in words is "six hundred twenty-seven million, seven hundred ninety-one thousand, eighty-nine".