90620317 has 2 divisors, whose sum is σ = 90620318. Its totient is φ = 90620316.

The previous prime is 90620297. The next prime is 90620351. The reversal of 90620317 is 71302609.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53787556 + 36832761 = 7334^2 + 6069^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90620317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90620357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45310158 + 45310159.

It is an arithmetic number, because the mean of its divisors is an integer number (45310159).

Almost surely, 2^90620317 is an apocalyptic number.

It is an amenable number.

90620317 is a deficient number, since it is larger than the sum of its proper divisors (1).

90620317 is an equidigital number, since it uses as much as digits as its factorization.

90620317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 90620317 is about 9519.4704159423. The cubic root of 90620317 is about 449.1677076829.

The spelling of 90620317 in words is "ninety million, six hundred twenty thousand, three hundred seventeen".