90064811 has 4 divisors (see below), whose sum is σ = 90352872. Its totient is φ = 89776752.

The previous prime is 90064787. The next prime is 90064829. The reversal of 90064811 is 11846009.

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 90064811 - 2¹⁸ = 89802667 is a prime.

It is a super-2 number, since 2×90064811² = 16223340360931442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90064841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143561 + ... + 144186.

It is an arithmetic number, because the mean of its divisors is an integer number (22588218).

Almost surely, 2^90064811 is an apocalyptic number.

90064811 is a deficient number, since it is larger than the sum of its proper divisors (288061).

90064811 is a wasteful number, since it uses less digits than its factorization.

90064811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288060.

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

The square root of 90064811 is about 9490.2482053948. The cubic root of 90064811 is about 448.2480208159.

The spelling of 90064811 in words is "ninety million, sixty-four thousand, eight hundred eleven".