90616013 has 2 divisors, whose sum is σ = 90616014. Its totient is φ = 90616012.

The previous prime is 90616003. The next prime is 90616033. The reversal of 90616013 is 31061609.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88868329 + 1747684 = 9427^2 + 1322^2 .

It is a cyclic number.

It is not a de Polignac number, because 90616013 - 2⁶ = 90615949 is a prime.

It is a super-2 number, since 2×90616013² = 16422523624032338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90616003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45308006 + 45308007.

It is an arithmetic number, because the mean of its divisors is an integer number (45308007).

Almost surely, 2^90616013 is an apocalyptic number.

It is an amenable number.

90616013 is a deficient number, since it is larger than the sum of its proper divisors (1).

90616013 is an equidigital number, since it uses as much as digits as its factorization.

90616013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 90616013 is about 9519.2443502623. The cubic root of 90616013 is about 449.1605965166.

The spelling of 90616013 in words is "ninety million, six hundred sixteen thousand, thirteen".