653946 has 8 divisors (see below), whose sum is σ = 1307904. Its totient is φ = 217980.

The previous prime is 653941. The next prime is 653951. The reversal of 653946 is 649356.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (653941) and next prime (653951).

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

653946 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 653946.

It is not an unprimeable number, because it can be changed into a prime (653941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54490 + ... + 54501.

It is an arithmetic number, because the mean of its divisors is an integer number (163488).

2⁶⁵³⁹⁴⁶ is an apocalyptic number.

653946 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

653946 is a wasteful number, since it uses less digits than its factorization.

653946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108996.

The product of its digits is 19440, while the sum is 33.

The square root of 653946 is about 808.6692772698. The cubic root of 653946 is about 86.7988482649.

The spelling of 653946 in words is "six hundred fifty-three thousand, nine hundred forty-six".