679443771 has 16 divisors (see below), whose sum is σ = 935932928. Its totient is φ = 437983200.

The previous prime is 679443769. The next prime is 679443799. The reversal of 679443771 is 177344976.

It is not a de Polignac number, because 679443771 - 2¹ = 679443769 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 679443771.

It is not an unprimeable number, because it can be changed into a prime (679443571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148500 + ... + 153006.

It is an arithmetic number, because the mean of its divisors is an integer number (58495808).

Almost surely, 2^679443771 is an apocalyptic number.

679443771 is a deficient number, since it is larger than the sum of its proper divisors (256489157).

679443771 is a wasteful number, since it uses less digits than its factorization.

679443771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6162.

The product of its digits is 889056, while the sum is 48.

The square root of 679443771 is about 26066.1422347075. The cubic root of 679443771 is about 879.1260999897.

The spelling of 679443771 in words is "six hundred seventy-nine million, four hundred forty-three thousand, seven hundred seventy-one".