690986068 has 12 divisors (see below), whose sum is σ = 1209909652. Its totient is φ = 345297600.

The previous prime is 690986059. The next prime is 690986071. The reversal of 690986068 is 860689096.

690986068 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 233539524 + 457446544 = 15282^2 + 21388^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40755 + ... + 55162.

Almost surely, 2^690986068 is an apocalyptic number.

It is an amenable number.

690986068 is a deficient number, since it is larger than the sum of its proper divisors (518923584).

690986068 is a wasteful number, since it uses less digits than its factorization.

690986068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97722 (or 97720 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 52.

The square root of 690986068 is about 26286.6138557251. The cubic root of 690986068 is about 884.0763312534.

The spelling of 690986068 in words is "six hundred ninety million, nine hundred eighty-six thousand, sixty-eight".