90684011 has 4 divisors (see below), whose sum is σ = 98928024. Its totient is φ = 82440000.

The previous prime is 90683993. The next prime is 90684019. The reversal of 90684011 is 11048609.

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

It is a cyclic number.

It is not a de Polignac number, because 90684011 - 2¹⁰ = 90682987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90684019) 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, 4121990 + ... + 4122011.

It is an arithmetic number, because the mean of its divisors is an integer number (24732006).

Almost surely, 2^90684011 is an apocalyptic number.

90684011 is a deficient number, since it is larger than the sum of its proper divisors (8244013).

90684011 is a wasteful number, since it uses less digits than its factorization.

90684011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8244012.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 90684011 is about 9522.8152875082. The cubic root of 90684011 is about 449.2729180401.

The spelling of 90684011 in words is "ninety million, six hundred eighty-four thousand, eleven".