90906851 has 8 divisors (see below), whose sum is σ = 107476320. Its totient is φ = 75233088.

The previous prime is 90906841. The next prime is 90906853. The reversal of 90906851 is 15860909.

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

It is not a de Polignac number, because 90906851 - 2¹⁴ = 90890467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90906853) 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 7 ways as a sum of consecutive naturals, for example, 223706 + ... + 224111.

It is an arithmetic number, because the mean of its divisors is an integer number (13434540).

Almost surely, 2^90906851 is an apocalyptic number.

90906851 is a deficient number, since it is larger than the sum of its proper divisors (16569469).

90906851 is a wasteful number, since it uses less digits than its factorization.

90906851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447853.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 90906851 is about 9534.5084299087. The cubic root of 90906851 is about 449.6406200635.

The spelling of 90906851 in words is "ninety million, nine hundred six thousand, eight hundred fifty-one".