671340777 has 8 divisors (see below), whose sum is σ = 907383264. Its totient is φ = 441429408.

The previous prime is 671340757. The next prime is 671340793. The reversal of 671340777 is 777043176.

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

It is not a de Polignac number, because 671340777 - 2⁸ = 671340521 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (671340757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1532523 + ... + 1532960.

It is an arithmetic number, because the mean of its divisors is an integer number (113422908).

Almost surely, 2^671340777 is an apocalyptic number.

It is an amenable number.

671340777 is a deficient number, since it is larger than the sum of its proper divisors (236042487).

671340777 is a wasteful number, since it uses less digits than its factorization.

671340777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3065559.

The product of its (nonzero) digits is 172872, while the sum is 42.

The square root of 671340777 is about 25910.2446341211. The cubic root of 671340777 is about 875.6173176281.

The spelling of 671340777 in words is "six hundred seventy-one million, three hundred forty thousand, seven hundred seventy-seven".