679494771 has 32 divisors (see below), whose sum is σ = 1032076800. Its totient is φ = 441698400.

The previous prime is 679494769. The next prime is 679494791. The reversal of 679494771 is 177494976.

It is not a de Polignac number, because 679494771 - 2¹ = 679494769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (679494791) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 180850 + ... + 184568.

It is an arithmetic number, because the mean of its divisors is an integer number (32252400).

Almost surely, 2^679494771 is an apocalyptic number.

679494771 is a deficient number, since it is larger than the sum of its proper divisors (352582029).

679494771 is a wasteful number, since it uses less digits than its factorization.

679494771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3896 (or 3890 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 54.

The square root of 679494771 is about 26067.1204969018. The cubic root of 679494771 is about 879.1480955844.

The spelling of 679494771 in words is "six hundred seventy-nine million, four hundred ninety-four thousand, seven hundred seventy-one".