90810733 has 4 divisors (see below), whose sum is σ = 97796188. Its totient is φ = 83825280.

The previous prime is 90810703. The next prime is 90810743. The reversal of 90810733 is 33701809.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33701809 = 43 ⋅783763.

It can be written as a sum of positive squares in 2 ways, for example, as 18679684 + 72131049 = 4322^2 + 8493^2 .

It is a cyclic number.

It is not a de Polignac number, because 90810733 - 2⁵ = 90810701 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90810695 and 90810704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90810703) 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, 3492708 + ... + 3492733.

It is an arithmetic number, because the mean of its divisors is an integer number (24449047).

Almost surely, 2^90810733 is an apocalyptic number.

It is an amenable number.

90810733 is a deficient number, since it is larger than the sum of its proper divisors (6985455).

90810733 is a wasteful number, since it uses less digits than its factorization.

90810733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6985454.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 90810733 is about 9529.4665642941. The cubic root of 90810733 is about 449.4820922313.

The spelling of 90810733 in words is "ninety million, eight hundred ten thousand, seven hundred thirty-three".