663574 has 8 divisors (see below), whose sum is σ = 1000008. Its totient is φ = 330240.

The previous prime is 663571. The next prime is 663581. The reversal of 663574 is 475366.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132 + ... + 1159.

It is an arithmetic number, because the mean of its divisors is an integer number (125001).

2⁶⁶³⁵⁷⁴ is an apocalyptic number.

663574 is a deficient number, since it is larger than the sum of its proper divisors (336434).

663574 is a wasteful number, since it uses less digits than its factorization.

663574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550.

The product of its digits is 15120, while the sum is 31.

The square root of 663574 is about 814.6005155903. The cubic root of 663574 is about 87.2227523885. Note that the first 3 decimals are identical.

The spelling of 663574 in words is "six hundred sixty-three thousand, five hundred seventy-four".