90577867 has 2 divisors, whose sum is σ = 90577868. Its totient is φ = 90577866.

The previous prime is 90577843. The next prime is 90577871. The reversal of 90577867 is 76877509.

It is a strong prime.

It is an emirp because it is prime and its reverse (76877509) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90577867 - 2¹¹ = 90575819 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90577867.

It is not a weakly prime, because it can be changed into another prime (90574867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45288933 + 45288934.

It is an arithmetic number, because the mean of its divisors is an integer number (45288934).

Almost surely, 2^90577867 is an apocalyptic number.

90577867 is a deficient number, since it is larger than the sum of its proper divisors (1).

90577867 is an equidigital number, since it uses as much as digits as its factorization.

90577867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 740880, while the sum is 49.

The square root of 90577867 is about 9517.2405139305. The cubic root of 90577867 is about 449.0975609878.

The spelling of 90577867 in words is "ninety million, five hundred seventy-seven thousand, eight hundred sixty-seven".