901663 has 8 divisors (see below), whose sum is σ = 1091232. Its totient is φ = 727296.

The previous prime is 901657. The next prime is 901679. The reversal of 901663 is 366109.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 901663 - 2¹⁷ = 770591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (901613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3670 + ... + 3907.

It is an arithmetic number, because the mean of its divisors is an integer number (136404).

2⁹⁰¹⁶⁶³ is an apocalyptic number.

901663 is a deficient number, since it is larger than the sum of its proper divisors (189569).

901663 is a wasteful number, since it uses less digits than its factorization.

901663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7601.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 901663 is about 949.5593714982. The cubic root of 901663 is about 96.6083688652.

The spelling of 901663 in words is "nine hundred one thousand, six hundred sixty-three".