90682805 has 4 divisors (see below), whose sum is σ = 108819372. Its totient is φ = 72546240.

The previous prime is 90682799. The next prime is 90682807. The reversal of 90682805 is 50828609.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14190289 + 76492516 = 3767^2 + 8746^2 .

It is not a de Polignac number, because 90682805 - 2¹⁸ = 90420661 is a prime.

It is a super-2 number, since 2×90682805² = 16446742245336050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90682807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9068276 + ... + 9068285.

It is an arithmetic number, because the mean of its divisors is an integer number (27204843).

Almost surely, 2^90682805 is an apocalyptic number.

It is an amenable number.

90682805 is a deficient number, since it is larger than the sum of its proper divisors (18136567).

90682805 is a wasteful number, since it uses less digits than its factorization.

90682805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18136566.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 90682805 is about 9522.7519656872. The cubic root of 90682805 is about 449.2709264154.

The spelling of 90682805 in words is "ninety million, six hundred eighty-two thousand, eight hundred five".