90066787 has 2 divisors, whose sum is σ = 90066788. Its totient is φ = 90066786.

The previous prime is 90066751. The next prime is 90066793. The reversal of 90066787 is 78766009.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90066787 - 2⁷ = 90066659 is a prime.

It is a super-2 number, since 2×90066787² = 16224052241006738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90066727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45033393 + 45033394.

It is an arithmetic number, because the mean of its divisors is an integer number (45033394).

Almost surely, 2^90066787 is an apocalyptic number.

90066787 is a deficient number, since it is larger than the sum of its proper divisors (1).

90066787 is an equidigital number, since it uses as much as digits as its factorization.

90066787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 90066787 is about 9490.3523116900. The cubic root of 90066787 is about 448.2512989427.

The spelling of 90066787 in words is "ninety million, sixty-six thousand, seven hundred eighty-seven".