90780970 has 64 divisors (see below), whose sum is σ = 195664896. Its totient is φ = 29675520.

The previous prime is 90780967. The next prime is 90780971. The reversal of 90780970 is 7908709.

It is not an unprimeable number, because it can be changed into a prime (90780971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134554 + ... + 135226.

It is an arithmetic number, because the mean of its divisors is an integer number (3057264).

Almost surely, 2^90780970 is an apocalyptic number.

90780970 is an abundant number, since it is smaller than the sum of its proper divisors (104883926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90780970 is a wasteful number, since it uses less digits than its factorization.

90780970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775.

The product of its (nonzero) digits is 31752, while the sum is 40.

The square root of 90780970 is about 9527.9048064094. The cubic root of 90780970 is about 449.4329813062.

The spelling of 90780970 in words is "ninety million, seven hundred eighty thousand, nine hundred seventy".