90728482693 has 8 divisors (see below), whose sum is σ = 90804956312. Its totient is φ = 90652041216.

The previous prime is 90728482633. The next prime is 90728482711. The reversal of 90728482693 is 39628482709.

It can be written as a sum of positive squares in 4 ways, for example, as 4411217889 + 86317264804 = 66417^2 + 293798^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90728482693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90728482633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12430021 + ... + 12437317.

It is an arithmetic number, because the mean of its divisors is an integer number (11350619539).

Almost surely, 2^90728482693 is an apocalyptic number.

It is an amenable number.

90728482693 is a deficient number, since it is larger than the sum of its proper divisors (76473619).

90728482693 is a wasteful number, since it uses less digits than its factorization.

90728482693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16071.

The product of its (nonzero) digits is 10450944, while the sum is 58.

The spelling of 90728482693 in words is "ninety billion, seven hundred twenty-eight million, four hundred eighty-two thousand, six hundred ninety-three".