90607871 has 4 divisors (see below), whose sum is σ = 90687744. Its totient is φ = 90528000.

The previous prime is 90607859. The next prime is 90607873. The reversal of 90607871 is 17870609.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17870609 = 23 ⋅776983.

It is a cyclic number.

It is not a de Polignac number, because 90607871 - 2¹⁸ = 90345727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90607873) 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, 38210 + ... + 40511.

It is an arithmetic number, because the mean of its divisors is an integer number (22671936).

Almost surely, 2^90607871 is an apocalyptic number.

90607871 is a deficient number, since it is larger than the sum of its proper divisors (79873).

90607871 is a wasteful number, since it uses less digits than its factorization.

90607871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79872.

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 90607871 is about 9518.8166806594. The cubic root of 90607871 is about 449.1471435040.

The spelling of 90607871 in words is "ninety million, six hundred seven thousand, eight hundred seventy-one".