680545826 has 16 divisors (see below), whose sum is σ = 1031220288. Its totient is φ = 336822000.

The previous prime is 680545799. The next prime is 680545837. The reversal of 680545826 is 628545086.

It is a super-3 number, since 3×680545826³ (a number of 27 digits) contains 333 as substring.

It is a Curzon number.

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, 84641 + ... + 92331.

It is an arithmetic number, because the mean of its divisors is an integer number (64451268).

Almost surely, 2^680545826 is an apocalyptic number.

680545826 is a deficient number, since it is larger than the sum of its proper divisors (350674462).

680545826 is a wasteful number, since it uses less digits than its factorization.

680545826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8137.

The product of its (nonzero) digits is 460800, while the sum is 44.

The square root of 680545826 is about 26087.2732572801. The cubic root of 680545826 is about 879.6011562077.

The spelling of 680545826 in words is "six hundred eighty million, five hundred forty-five thousand, eight hundred twenty-six".