676391399 has 8 divisors (see below), whose sum is σ = 689040000. Its totient is φ = 663782392.

The previous prime is 676391381. The next prime is 676391407. The reversal of 676391399 is 993193676.

It is a happy number.

676391399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-676391399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 676391399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (676391329) 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, 25772 + ... + 44910.

It is an arithmetic number, because the mean of its divisors is an integer number (86130000).

Almost surely, 2^676391399 is an apocalyptic number.

676391399 is a deficient number, since it is larger than the sum of its proper divisors (12648601).

676391399 is a wasteful number, since it uses less digits than its factorization.

676391399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19797.

The product of its digits is 1653372, while the sum is 53.

The square root of 676391399 is about 26007.5258146560. The cubic root of 676391399 is about 877.8076448803.

The spelling of 676391399 in words is "six hundred seventy-six million, three hundred ninety-one thousand, three hundred ninety-nine".