90648243 has 24 divisors (see below), whose sum is σ = 150152288. Its totient is φ = 51622272.

The previous prime is 90648227. The next prime is 90648251. The reversal of 90648243 is 34284609.

It is a happy number.

90648243 is a `hidden beast` number, since 9 + 0 + 648 + 2 + 4 + 3 = 666.

It is not a de Polignac number, because 90648243 - 2⁴ = 90648227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90648198 and 90648207.

It is not an unprimeable number, because it can be changed into a prime (90648203) 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, 17421 + ... + 22017.

Almost surely, 2^90648243 is an apocalyptic number.

90648243 is a deficient number, since it is larger than the sum of its proper divisors (59504045).

90648243 is a wasteful number, since it uses less digits than its factorization.

90648243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4923 (or 4920 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 90648243 is about 9520.9370862326. The cubic root of 90648243 is about 449.2138421833.

The spelling of 90648243 in words is "ninety million, six hundred forty-eight thousand, two hundred forty-three".