90646271 has 4 divisors (see below), whose sum is σ = 92356632. Its totient is φ = 88935912.

The previous prime is 90646229. The next prime is 90646273. The reversal of 90646271 is 17264609.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17264609 = 2777 ⋅6217.

It is a cyclic number.

It is not a de Polignac number, because 90646271 - 2²⁶ = 23537407 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 (90646273) 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, 855101 + ... + 855206.

It is an arithmetic number, because the mean of its divisors is an integer number (23089158).

Almost surely, 2^90646271 is an apocalyptic number.

90646271 is a deficient number, since it is larger than the sum of its proper divisors (1710361).

90646271 is a wasteful number, since it uses less digits than its factorization.

90646271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1710360.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 90646271 is about 9520.8335244347. The cubic root of 90646271 is about 449.2105846974.

The spelling of 90646271 in words is "ninety million, six hundred forty-six thousand, two hundred seventy-one".