90633811 has 2 divisors, whose sum is σ = 90633812. Its totient is φ = 90633810.

The previous prime is 90633761. The next prime is 90633839. The reversal of 90633811 is 11833609.

It is a strong prime.

It is an emirp because it is prime and its reverse (11833609) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90633811 - 2⁹ = 90633299 is a prime.

It is not a weakly prime, because it can be changed into another prime (90633311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45316905 + 45316906.

It is an arithmetic number, because the mean of its divisors is an integer number (45316906).

Almost surely, 2^90633811 is an apocalyptic number.

90633811 is a deficient number, since it is larger than the sum of its proper divisors (1).

90633811 is an equidigital number, since it uses as much as digits as its factorization.

90633811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 90633811 is about 9520.1791474741. The cubic root of 90633811 is about 449.1900013157.

The spelling of 90633811 in words is "ninety million, six hundred thirty-three thousand, eight hundred eleven".