90739605 has 16 divisors (see below), whose sum is σ = 158382144. Its totient is φ = 43994880.

The previous prime is 90739603. The next prime is 90739613. The reversal of 90739605 is 50693709.

It is not a de Polignac number, because 90739605 - 2¹ = 90739603 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90739603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274804 + ... + 275133.

It is an arithmetic number, because the mean of its divisors is an integer number (9898884).

Almost surely, 2^90739605 is an apocalyptic number.

It is an amenable number.

90739605 is a deficient number, since it is larger than the sum of its proper divisors (67642539).

90739605 is a wasteful number, since it uses less digits than its factorization.

90739605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549956.

The product of its (nonzero) digits is 51030, while the sum is 39.

The square root of 90739605 is about 9525.7338299997. The cubic root of 90739605 is about 449.3647084819.

The spelling of 90739605 in words is "ninety million, seven hundred thirty-nine thousand, six hundred five".