690975013 has 6 divisors (see below), whose sum is σ = 734011826. Its totient is φ = 650329152.

The previous prime is 690975011. The next prime is 690975029. The reversal of 690975013 is 310579096.

690975013 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 3 ways, for example, as 150970369 + 540004644 = 12287^2 + 23238^2 .

It is not a de Polignac number, because 690975013 - 2¹ = 690975011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690975011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1195170 + ... + 1195747.

Almost surely, 2^690975013 is an apocalyptic number.

It is an amenable number.

690975013 is a deficient number, since it is larger than the sum of its proper divisors (43036813).

690975013 is a wasteful number, since it uses less digits than its factorization.

690975013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2390951 (or 2390934 counting only the distinct ones).

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 690975013 is about 26286.4035767543. The cubic root of 690975013 is about 884.0716164859.

The spelling of 690975013 in words is "six hundred ninety million, nine hundred seventy-five thousand, thirteen".