97816090 has 8 divisors (see below), whose sum is σ = 176068980. Its totient is φ = 39126432.

The previous prime is 97816063. The next prime is 97816109. The reversal of 97816090 is 9061879.

It can be written as a sum of positive squares in 2 ways, for example, as 78552769 + 19263321 = 8863^2 + 4389^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4890795 + ... + 4890814.

Almost surely, 2^97816090 is an apocalyptic number.

97816090 is a deficient number, since it is larger than the sum of its proper divisors (78252890).

97816090 is a wasteful number, since it uses less digits than its factorization.

97816090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9781616.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 97816090 is about 9890.2017168509. The cubic root of 97816090 is about 460.7550454322.

The spelling of 97816090 in words is "ninety-seven million, eight hundred sixteen thousand, ninety".