90660641 has 24 divisors (see below), whose sum is σ = 101175360. Its totient is φ = 81031104.

The previous prime is 90660623. The next prime is 90660667. The reversal of 90660641 is 14606609.

It is a de Polignac number, because none of the positive numbers 2^k-90660641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90660598 and 90660607.

It is not an unprimeable number, because it can be changed into a prime (90660041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 831695 + ... + 831803.

It is an arithmetic number, because the mean of its divisors is an integer number (4215640).

Almost surely, 2^90660641 is an apocalyptic number.

It is an amenable number.

90660641 is a deficient number, since it is larger than the sum of its proper divisors (10514719).

90660641 is a wasteful number, since it uses less digits than its factorization.

90660641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 90660641 is about 9521.5881553447. The cubic root of 90660641 is about 449.2343209745.

The spelling of 90660641 in words is "ninety million, six hundred sixty thousand, six hundred forty-one".