677075221 has 4 divisors (see below), whose sum is σ = 681619500. Its totient is φ = 672530944.

The previous prime is 677075213. The next prime is 677075257. The reversal of 677075221 is 122570776.

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

It can be written as a sum of positive squares in 2 ways, for example, as 385690321 + 291384900 = 19639^2 + 17070^2 .

It is a cyclic number.

It is not a de Polignac number, because 677075221 - 2³ = 677075213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677075521) 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, 2271916 + ... + 2272213.

It is an arithmetic number, because the mean of its divisors is an integer number (170404875).

Almost surely, 2^677075221 is an apocalyptic number.

It is an amenable number.

677075221 is a deficient number, since it is larger than the sum of its proper divisors (4544279).

677075221 is a wasteful number, since it uses less digits than its factorization.

677075221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4544278.

The product of its (nonzero) digits is 41160, while the sum is 37.

The square root of 677075221 is about 26020.6691113046. The cubic root of 677075221 is about 878.1033622257.

The spelling of 677075221 in words is "six hundred seventy-seven million, seventy-five thousand, two hundred twenty-one".