901643 has 2 divisors, whose sum is σ = 901644. Its totient is φ = 901642.

The previous prime is 901613. The next prime is 901657. The reversal of 901643 is 346109.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 901643 - 2¹⁶ = 836107 is a prime.

It is not a weakly prime, because it can be changed into another prime (901613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450821 + 450822.

It is an arithmetic number, because the mean of its divisors is an integer number (450822).

2⁹⁰¹⁶⁴³ is an apocalyptic number.

901643 is a deficient number, since it is larger than the sum of its proper divisors (1).

901643 is an equidigital number, since it uses as much as digits as its factorization.

901643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 901643 is about 949.5488402394. The cubic root of 901643 is about 96.6076545622.

The spelling of 901643 in words is "nine hundred one thousand, six hundred forty-three".