680577026 has 12 divisors (see below), whose sum is σ = 1031940882. Its totient is φ = 336600576.

The previous prime is 680577013. The next prime is 680577047. The reversal of 680577026 is 620775086.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 174372025 + 506205001 = 13205^2 + 22499^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 362426 + ... + 364298.

Almost surely, 2^680577026 is an apocalyptic number.

680577026 is a deficient number, since it is larger than the sum of its proper divisors (351363856).

680577026 is an frugal number, since it uses more digits than its factorization.

680577026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3845 (or 1972 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 680577026 is about 26087.8712431659. The cubic root of 680577026 is about 879.6145979363.

The spelling of 680577026 in words is "six hundred eighty million, five hundred seventy-seven thousand, twenty-six".