90332647 has 4 divisors (see below), whose sum is σ = 90448216. Its totient is φ = 90217080.

The previous prime is 90332633. The next prime is 90332653. The reversal of 90332647 is 74623309.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74623309 = 1091 ⋅68399.

It is a cyclic number.

It is not a de Polignac number, because 90332647 - 2¹¹ = 90330599 is a prime.

It is a super-2 number, since 2×90332647² = 16319974228053218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90333647) 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, 56604 + ... + 58177.

It is an arithmetic number, because the mean of its divisors is an integer number (22612054).

Almost surely, 2^90332647 is an apocalyptic number.

90332647 is a deficient number, since it is larger than the sum of its proper divisors (115569).

90332647 is a wasteful number, since it uses less digits than its factorization.

90332647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115568.

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 90332647 is about 9504.3488467122. The cubic root of 90332647 is about 448.6919165053.

The spelling of 90332647 in words is "ninety million, three hundred thirty-two thousand, six hundred forty-seven".