90566419 has 4 divisors (see below), whose sum is σ = 90794944. Its totient is φ = 90337896.

The previous prime is 90566389. The next prime is 90566447. The reversal of 90566419 is 91466509.

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

It is a cyclic number.

It is not a de Polignac number, because 90566419 - 2⁷ = 90566291 is a prime.

It is a super-2 number, since 2×90566419² = 16404552500967122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90560419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113667 + ... + 114460.

It is an arithmetic number, because the mean of its divisors is an integer number (22698736).

Almost surely, 2^90566419 is an apocalyptic number.

90566419 is a deficient number, since it is larger than the sum of its proper divisors (228525).

90566419 is a wasteful number, since it uses less digits than its factorization.

90566419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228524.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 90566419 is about 9516.6390600884. The cubic root of 90566419 is about 449.0786399362.

The spelling of 90566419 in words is "ninety million, five hundred sixty-six thousand, four hundred nineteen".