633947 has 8 divisors (see below), whose sum is σ = 680400. Its totient is φ = 588544.

The previous prime is 633943. The next prime is 633953. The reversal of 633947 is 749336.

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 633947 - 2² = 633943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (633943) 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, 1304 + ... + 1722.

It is an arithmetic number, because the mean of its divisors is an integer number (85050).

2⁶³³⁹⁴⁷ is an apocalyptic number.

633947 is a deficient number, since it is larger than the sum of its proper divisors (46453).

633947 is a wasteful number, since it uses less digits than its factorization.

633947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525.

The product of its digits is 13608, while the sum is 32.

The square root of 633947 is about 796.2078874264. The cubic root of 633947 is about 85.9048433715.

The spelling of 633947 in words is "six hundred thirty-three thousand, nine hundred forty-seven".