90195706 has 4 divisors (see below), whose sum is σ = 135293562. Its totient is φ = 45097852.

The previous prime is 90195701. The next prime is 90195733. The reversal of 90195706 is 60759109.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 54686025 + 35509681 = 7395^2 + 5959^2 .

It is not an unprimeable number, because it can be changed into a prime (90195701) 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 as a sum of consecutive naturals, namely, 22548925 + ... + 22548928.

Almost surely, 2^90195706 is an apocalyptic number.

90195706 is a deficient number, since it is larger than the sum of its proper divisors (45097856).

90195706 is a wasteful number, since it uses less digits than its factorization.

90195706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45097855.

The product of its (nonzero) digits is 17010, while the sum is 37.

The square root of 90195706 is about 9497.1419911466. The cubic root of 90195706 is about 448.4650683056.

The spelling of 90195706 in words is "ninety million, one hundred ninety-five thousand, seven hundred six".