90197105 has 8 divisors (see below), whose sum is σ = 111969000. Its totient is φ = 69669376.

The previous prime is 90197077. The next prime is 90197111. The reversal of 90197105 is 50179109.

It can be written as a sum of positive squares in 4 ways, for example, as 4096 + 90193009 = 64^2 + 9497^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 90197105 - 2²² = 86002801 is a prime.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 310880 + ... + 311169.

It is an arithmetic number, because the mean of its divisors is an integer number (13996125).

Almost surely, 2^90197105 is an apocalyptic number.

It is an amenable number.

90197105 is a deficient number, since it is larger than the sum of its proper divisors (21771895).

90197105 is a wasteful number, since it uses less digits than its factorization.

90197105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622083.

The product of its (nonzero) digits is 2835, while the sum is 32.

The square root of 90197105 is about 9497.2156445982. The cubic root of 90197105 is about 448.4673869651.

The spelling of 90197105 in words is "ninety million, one hundred ninety-seven thousand, one hundred five".