683591977 has 4 divisors (see below), whose sum is σ = 692245120. Its totient is φ = 674938836.

The previous prime is 683591969. The next prime is 683591999. The reversal of 683591977 is 779195386.

683591977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 683591977 - 2³ = 683591969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (683591927) 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, 4326453 + ... + 4326610.

It is an arithmetic number, because the mean of its divisors is an integer number (173061280).

Almost surely, 2^683591977 is an apocalyptic number.

It is an amenable number.

683591977 is a deficient number, since it is larger than the sum of its proper divisors (8653143).

683591977 is an equidigital number, since it uses as much as digits as its factorization.

683591977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8653142.

The product of its digits is 2857680, while the sum is 55.

The square root of 683591977 is about 26145.5919229227. The cubic root of 683591977 is about 880.9115799159.

The spelling of 683591977 in words is "six hundred eighty-three million, five hundred ninety-one thousand, nine hundred seventy-seven".