920651 has 2 divisors, whose sum is σ = 920652. Its totient is φ = 920650.

The previous prime is 920641. The next prime is 920653. The reversal of 920651 is 156029.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 920651 - 2¹⁸ = 658507 is a prime.

Together with 920653, it forms a pair of twin primes.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 920651.

It is not a weakly prime, because it can be changed into another prime (920653) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460325 + 460326.

It is an arithmetic number, because the mean of its divisors is an integer number (460326).

2⁹²⁰⁶⁵¹ is an apocalyptic number.

920651 is a deficient number, since it is larger than the sum of its proper divisors (1).

920651 is an equidigital number, since it uses as much as digits as its factorization.

920651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 920651 is about 959.5056018596. The cubic root of 920651 is about 97.2818176234.

The spelling of 920651 in words is "nine hundred twenty thousand, six hundred fifty-one".