90516647 has 4 divisors (see below), whose sum is σ = 97479480. Its totient is φ = 83553816.

The previous prime is 90516637. The next prime is 90516659. The reversal of 90516647 is 74661509.

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

It is a cyclic number.

It is not a de Polignac number, because 90516647 - 2⁴ = 90516631 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90516647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90516607) 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, 3481397 + ... + 3481422.

It is an arithmetic number, because the mean of its divisors is an integer number (24369870).

Almost surely, 2^90516647 is an apocalyptic number.

90516647 is a deficient number, since it is larger than the sum of its proper divisors (6962833).

90516647 is a wasteful number, since it uses less digits than its factorization.

90516647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6962832.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 90516647 is about 9514.0237018834. The cubic root of 90516647 is about 448.9963591155.

The spelling of 90516647 in words is "ninety million, five hundred sixteen thousand, six hundred forty-seven".