90257606 has 4 divisors (see below), whose sum is σ = 135386412. Its totient is φ = 45128802.

The previous prime is 90257597. The next prime is 90257617. The reversal of 90257606 is 60675209.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22564400 + ... + 22564403.

It is an arithmetic number, because the mean of its divisors is an integer number (33846603).

Almost surely, 2^90257606 is an apocalyptic number.

90257606 is a deficient number, since it is larger than the sum of its proper divisors (45128806).

90257606 is a wasteful number, since it uses less digits than its factorization.

90257606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45128805.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 90257606 is about 9500.4003073555. The cubic root of 90257606 is about 448.5676365281.

The spelling of 90257606 in words is "ninety million, two hundred fifty-seven thousand, six hundred six".