681277026 has 32 divisors (see below), whose sum is σ = 1384960320. Its totient is φ = 223375104.

The previous prime is 681276991. The next prime is 681277067. The reversal of 681277026 is 620772186.

681277026 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177241 + ... + 181043.

It is an arithmetic number, because the mean of its divisors is an integer number (43280010).

Almost surely, 2^681277026 is an apocalyptic number.

681277026 is an abundant number, since it is smaller than the sum of its proper divisors (703683294).

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

681277026 is a wasteful number, since it uses less digits than its factorization.

681277026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4290.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 681277026 is about 26101.2839914055. The cubic root of 681277026 is about 879.9160672360.

It can be divided in two parts, 6812 and 77026, that added together give a palindrome (83838).

The spelling of 681277026 in words is "six hundred eighty-one million, two hundred seventy-seven thousand, twenty-six".