920676561 has 16 divisors (see below), whose sum is σ = 1432786944. Its totient is φ = 514906704.

The previous prime is 920676557. The next prime is 920676563. The reversal of 920676561 is 165676029.

It is not a de Polignac number, because 920676561 - 2² = 920676557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (920676563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 465415 + ... + 467388.

It is an arithmetic number, because the mean of its divisors is an integer number (89549184).

Almost surely, 2^920676561 is an apocalyptic number.

It is an amenable number.

920676561 is a deficient number, since it is larger than the sum of its proper divisors (512110383).

920676561 is a wasteful number, since it uses less digits than its factorization.

920676561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932860.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 920676561 is about 30342.6525043543. The cubic root of 920676561 is about 972.8271792749.

The spelling of 920676561 in words is "nine hundred twenty million, six hundred seventy-six thousand, five hundred sixty-one".