663474 has 16 divisors (see below), whose sum is σ = 1516608. Its totient is φ = 189552.

The previous prime is 663463. The next prime is 663517. The reversal of 663474 is 474366.

It is an Ulam number.

It is a nialpdrome in base 7.

It is a congruent number.

It is an unprimeable number.

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, 7857 + ... + 7940.

It is an arithmetic number, because the mean of its divisors is an integer number (94788).

2⁶⁶³⁴⁷⁴ is an apocalyptic number.

663474 is an abundant number, since it is smaller than the sum of its proper divisors (853134).

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

663474 is a wasteful number, since it uses less digits than its factorization.

663474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15809.

The product of its digits is 12096, while the sum is 30.

The square root of 663474 is about 814.5391334982. The cubic root of 663474 is about 87.2183707052.

The spelling of 663474 in words is "six hundred sixty-three thousand, four hundred seventy-four".