90856607 has 2 divisors, whose sum is σ = 90856608. Its totient is φ = 90856606.

The previous prime is 90856559. The next prime is 90856621. The reversal of 90856607 is 70665809.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (70665809) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90856607 - 2¹² = 90852511 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90856907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45428303 + 45428304.

It is an arithmetic number, because the mean of its divisors is an integer number (45428304).

Almost surely, 2^90856607 is an apocalyptic number.

90856607 is a deficient number, since it is larger than the sum of its proper divisors (1).

90856607 is an equidigital number, since it uses as much as digits as its factorization.

90856607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 90856607 is about 9531.8732156906. The cubic root of 90856607 is about 449.5577663641.

The spelling of 90856607 in words is "ninety million, eight hundred fifty-six thousand, six hundred seven".