677487871 has 4 divisors (see below), whose sum is σ = 695798392. Its totient is φ = 659177352.

The previous prime is 677487869. The next prime is 677487911. The reversal of 677487871 is 178784776.

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 677487871 - 2¹ = 677487869 is a prime.

It is a super-2 number, since 2×677487871² = 917979630704225282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677487841) 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, 9155205 + ... + 9155278.

It is an arithmetic number, because the mean of its divisors is an integer number (173949598).

Almost surely, 2^677487871 is an apocalyptic number.

677487871 is a deficient number, since it is larger than the sum of its proper divisors (18310521).

677487871 is a wasteful number, since it uses less digits than its factorization.

677487871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18310520.

The product of its digits is 3687936, while the sum is 55.

The square root of 677487871 is about 26028.5971769514. The cubic root of 677487871 is about 878.2817155084.

The spelling of 677487871 in words is "six hundred seventy-seven million, four hundred eighty-seven thousand, eight hundred seventy-one".