677440017 has 28 divisors (see below), whose sum is σ = 1039364304. Its totient is φ = 441103320.

The previous prime is 677439977. The next prime is 677440031. The reversal of 677440017 is 710044776.

It is not a de Polignac number, because 677440017 - 2²⁷ = 543222289 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (677440037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 20542 + ... + 42152.

Almost surely, 2^677440017 is an apocalyptic number.

It is an amenable number.

677440017 is a deficient number, since it is larger than the sum of its proper divisors (361924287).

677440017 is an equidigital number, since it uses as much as digits as its factorization.

677440017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21672 (or 21657 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 677440017 is about 26027.6779025713. The cubic root of 677440017 is about 878.2610360322.

The spelling of 677440017 in words is "six hundred seventy-seven million, four hundred forty thousand, seventeen".