90780967 has 2 divisors, whose sum is σ = 90780968. Its totient is φ = 90780966.

The previous prime is 90780953. The next prime is 90780971. The reversal of 90780967 is 76908709.

It is a strong prime.

It is an emirp because it is prime and its reverse (76908709) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90780967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90780947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45390483 + 45390484.

It is an arithmetic number, because the mean of its divisors is an integer number (45390484).

Almost surely, 2^90780967 is an apocalyptic number.

90780967 is a deficient number, since it is larger than the sum of its proper divisors (1).

90780967 is an equidigital number, since it uses as much as digits as its factorization.

90780967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 90780967 is about 9527.9046489771. The cubic root of 90780967 is about 449.4329763555.

The spelling of 90780967 in words is "ninety million, seven hundred eighty thousand, nine hundred sixty-seven".