609090613 has 2 divisors, whose sum is σ = 609090614. Its totient is φ = 609090612.

The previous prime is 609090607. The next prime is 609090631. The reversal of 609090613 is 316090906.

Together with next prime (609090631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 457874404 + 151216209 = 21398^2 + 12297^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-609090613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (609090653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304545306 + 304545307.

It is an arithmetic number, because the mean of its divisors is an integer number (304545307).

Almost surely, 2^609090613 is an apocalyptic number.

It is an amenable number.

609090613 is a deficient number, since it is larger than the sum of its proper divisors (1).

609090613 is an equidigital number, since it uses as much as digits as its factorization.

609090613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 609090613 is about 24679.7612022483. The cubic root of 609090613 is about 847.6709542217.

The spelling of 609090613 in words is "six hundred nine million, ninety thousand, six hundred thirteen".