90068647 has 2 divisors, whose sum is σ = 90068648. Its totient is φ = 90068646.

The previous prime is 90068639. The next prime is 90068681. The reversal of 90068647 is 74686009.

It is a weak prime.

It is an emirp because it is prime and its reverse (74686009) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90068647 - 2³ = 90068639 is a prime.

It is a super-2 number, since 2×90068647² = 16224722344821218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90068687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45034323 + 45034324.

It is an arithmetic number, because the mean of its divisors is an integer number (45034324).

Almost surely, 2^90068647 is an apocalyptic number.

90068647 is a deficient number, since it is larger than the sum of its proper divisors (1).

90068647 is an equidigital number, since it uses as much as digits as its factorization.

90068647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 90068647 is about 9490.4503054386. The cubic root of 90068647 is about 448.2543845850.

The spelling of 90068647 in words is "ninety million, sixty-eight thousand, six hundred forty-seven".