679081977 has 12 divisors (see below), whose sum is σ = 1121024320. Its totient is φ = 388046808.

The previous prime is 679081957. The next prime is 679081981. The reversal of 679081977 is 779180976.

It is not a de Polignac number, because 679081977 - 2⁷ = 679081849 is a prime.

It is a super-2 number, since 2×679081977² = 922304662972457058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (679081927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5389477 + ... + 5389602.

Almost surely, 2^679081977 is an apocalyptic number.

It is an amenable number.

679081977 is a deficient number, since it is larger than the sum of its proper divisors (441942343).

679081977 is a wasteful number, since it uses less digits than its factorization.

679081977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10779092 (or 10779089 counting only the distinct ones).

The product of its (nonzero) digits is 1333584, while the sum is 54.

The square root of 679081977 is about 26059.2013883772. The cubic root of 679081977 is about 878.9700316325.

The spelling of 679081977 in words is "six hundred seventy-nine million, eighty-one thousand, nine hundred seventy-seven".