90587602073 has 2 divisors, whose sum is σ = 90587602074. Its totient is φ = 90587602072.

The previous prime is 90587602003. The next prime is 90587602111. The reversal of 90587602073 is 37020678509.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70208041024 + 20379561049 = 264968^2 + 142757^2 .

It is a cyclic number.

It is not a de Polignac number, because 90587602073 - 2²⁴ = 90570824857 is a prime.

It is a super-2 number, since 2×90587602073² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90587602003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45293801036 + 45293801037.

It is an arithmetic number, because the mean of its divisors is an integer number (45293801037).

Almost surely, 2^90587602073 is an apocalyptic number.

It is an amenable number.

90587602073 is a deficient number, since it is larger than the sum of its proper divisors (1).

90587602073 is an equidigital number, since it uses as much as digits as its factorization.

90587602073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 47.

The spelling of 90587602073 in words is "ninety billion, five hundred eighty-seven million, six hundred two thousand, seventy-three".