90571606 has 4 divisors (see below), whose sum is σ = 135857412. Its totient is φ = 45285802.

The previous prime is 90571601. The next prime is 90571721. The reversal of 90571606 is 60617509.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60617509 = 359 ⋅168851.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90571601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22642900 + ... + 22642903.

It is an arithmetic number, because the mean of its divisors is an integer number (33964353).

Almost surely, 2^90571606 is an apocalyptic number.

90571606 is a deficient number, since it is larger than the sum of its proper divisors (45285806).

90571606 is a wasteful number, since it uses less digits than its factorization.

90571606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45285805.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 90571606 is about 9516.9115788684. The cubic root of 90571606 is about 449.0872131155.

The spelling of 90571606 in words is "ninety million, five hundred seventy-one thousand, six hundred six".