677720417 has 8 divisors (see below), whose sum is σ = 740933760. Its totient is φ = 614774160.

The previous prime is 677720413. The next prime is 677720429. The reversal of 677720417 is 714027776.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 677720417 - 2² = 677720413 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (677720413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61442 + ... + 71627.

It is an arithmetic number, because the mean of its divisors is an integer number (92616720).

Almost surely, 2^677720417 is an apocalyptic number.

It is an amenable number.

677720417 is a deficient number, since it is larger than the sum of its proper divisors (63213343).

677720417 is a wasteful number, since it uses less digits than its factorization.

677720417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133543.

The product of its (nonzero) digits is 115248, while the sum is 41.

The square root of 677720417 is about 26033.0639187937. The cubic root of 677720417 is about 878.3821933396.

The spelling of 677720417 in words is "six hundred seventy-seven million, seven hundred twenty thousand, four hundred seventeen".