90658069 has 2 divisors, whose sum is σ = 90658070. Its totient is φ = 90658068.

The previous prime is 90658033. The next prime is 90658079. The reversal of 90658069 is 96085609.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49210225 + 41447844 = 7015^2 + 6438^2 .

It is an emirp because it is prime and its reverse (96085609) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90658069 - 2¹⁹ = 90133781 is a prime.

It is a super-2 number, since 2×90658069² = 16437770949617522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90658079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45329034 + 45329035.

It is an arithmetic number, because the mean of its divisors is an integer number (45329035).

Almost surely, 2^90658069 is an apocalyptic number.

It is an amenable number.

90658069 is a deficient number, since it is larger than the sum of its proper divisors (1).

90658069 is an equidigital number, since it uses as much as digits as its factorization.

90658069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 90658069 is about 9521.4530928845. The cubic root of 90658069 is about 449.2300727451.

The spelling of 90658069 in words is "ninety million, six hundred fifty-eight thousand, sixty-nine".