90720195 has 8 divisors (see below), whose sum is σ = 145152336. Its totient is φ = 48384096.

The previous prime is 90720187. The next prime is 90720197. The reversal of 90720195 is 59102709.

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

It is not a de Polignac number, because 90720195 - 2³ = 90720187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90720197) 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 7 ways as a sum of consecutive naturals, for example, 3023992 + ... + 3024021.

It is an arithmetic number, because the mean of its divisors is an integer number (18144042).

Almost surely, 2^90720195 is an apocalyptic number.

90720195 is a deficient number, since it is larger than the sum of its proper divisors (54432141).

90720195 is a wasteful number, since it uses less digits than its factorization.

90720195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6048021.

The product of its (nonzero) digits is 5670, while the sum is 33.

The square root of 90720195 is about 9524.7149563648. The cubic root of 90720195 is about 449.3326651751.

The spelling of 90720195 in words is "ninety million, seven hundred twenty thousand, one hundred ninety-five".