677242491 has 4 divisors (see below), whose sum is σ = 902989992. Its totient is φ = 451494992.

The previous prime is 677242477. The next prime is 677242493. The reversal of 677242491 is 194242776.

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 677242491 - 2¹⁷ = 677111419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (677242493) 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, 112873746 + ... + 112873751.

It is an arithmetic number, because the mean of its divisors is an integer number (225747498).

Almost surely, 2^677242491 is an apocalyptic number.

677242491 is a deficient number, since it is larger than the sum of its proper divisors (225747501).

677242491 is a wasteful number, since it uses less digits than its factorization.

677242491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225747500.

The product of its digits is 169344, while the sum is 42.

The square root of 677242491 is about 26023.8830884248. The cubic root of 677242491 is about 878.1756674639.

The spelling of 677242491 in words is "six hundred seventy-seven million, two hundred forty-two thousand, four hundred ninety-one".