920823611 has 4 divisors (see below), whose sum is σ = 922584792. Its totient is φ = 919062432.

The previous prime is 920823599. The next prime is 920823613. The reversal of 920823611 is 116328029.

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 920823611 - 2²⁶ = 853714747 is a prime.

It is a super-2 number, since 2×920823611² = 1695832245150158642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (920823613) 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, 879806 + ... + 880851.

It is an arithmetic number, because the mean of its divisors is an integer number (230646198).

Almost surely, 2^920823611 is an apocalyptic number.

920823611 is a deficient number, since it is larger than the sum of its proper divisors (1761181).

920823611 is a wasteful number, since it uses less digits than its factorization.

920823611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1761180.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 920823611 is about 30345.0755642493. The cubic root of 920823611 is about 972.8789696746.

The spelling of 920823611 in words is "nine hundred twenty million, eight hundred twenty-three thousand, six hundred eleven".