97638290 has 8 divisors (see below), whose sum is σ = 175748940. Its totient is φ = 39055312.

The previous prime is 97638263. The next prime is 97638311. The reversal of 97638290 is 9283679.

It can be written as a sum of positive squares in 2 ways, for example, as 87030241 + 10608049 = 9329^2 + 3257^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4881905 + ... + 4881924.

Almost surely, 2^97638290 is an apocalyptic number.

97638290 is a deficient number, since it is larger than the sum of its proper divisors (78110650).

97638290 is a wasteful number, since it uses less digits than its factorization.

97638290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9763836.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 97638290 is about 9881.2089341335. The cubic root of 97638290 is about 460.4757051115.

The spelling of 97638290 in words is "ninety-seven million, six hundred thirty-eight thousand, two hundred ninety".