679776523040 has 48 divisors (see below), whose sum is σ = 1661350393080. Its totient is φ = 262534379520.

The previous prime is 679776523001. The next prime is 679776523051. The reversal of 679776523040 is 40325677976.

It can be written as a sum of positive squares in 4 ways, for example, as 621959358736 + 57817164304 = 788644^2 + 240452^2 .

It is a super-2 number, since 2×679776523040² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73247141 + ... + 73256420.

Almost surely, 2^679776523040 is an apocalyptic number.

It is an amenable number.

679776523040 is an abundant number, since it is smaller than the sum of its proper divisors (981573870040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

679776523040 is a wasteful number, since it uses less digits than its factorization.

679776523040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146503605 (or 146503597 counting only the distinct ones).

The product of its (nonzero) digits is 13335840, while the sum is 56.

The spelling of 679776523040 in words is "six hundred seventy-nine billion, seven hundred seventy-six million, five hundred twenty-three thousand, forty".