90704777 has 2 divisors, whose sum is σ = 90704778. Its totient is φ = 90704776.

The previous prime is 90704753. The next prime is 90704813. The reversal of 90704777 is 77740709.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89038096 + 1666681 = 9436^2 + 1291^2 .

It is an emirp because it is prime and its reverse (77740709) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90704777 - 2⁸ = 90704521 is a prime.

It is not a weakly prime, because it can be changed into another prime (90704737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45352388 + 45352389.

It is an arithmetic number, because the mean of its divisors is an integer number (45352389).

Almost surely, 2^90704777 is an apocalyptic number.

It is an amenable number.

90704777 is a deficient number, since it is larger than the sum of its proper divisors (1).

90704777 is an equidigital number, since it uses as much as digits as its factorization.

90704777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86436, while the sum is 41.

The square root of 90704777 is about 9523.9055539206. The cubic root of 90704777 is about 449.3072088677.

The spelling of 90704777 in words is "ninety million, seven hundred four thousand, seven hundred seventy-seven".