647474 has 8 divisors (see below), whose sum is σ = 974640. Its totient is φ = 322596.

The previous prime is 647453. The next prime is 647477. The reversal of 647474 is 474746.

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

It is a self number, because there is not a number n which added to its sum of digits gives 647474.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 647474.

It is not an unprimeable number, because it can be changed into a prime (647477) 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, 737 + ... + 1355.

It is an arithmetic number, because the mean of its divisors is an integer number (121830).

2⁶⁴⁷⁴⁷⁴ is an apocalyptic number.

647474 is a deficient number, since it is larger than the sum of its proper divisors (327166).

647474 is a wasteful number, since it uses less digits than its factorization.

647474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144.

The product of its digits is 18816, while the sum is 32.

The square root of 647474 is about 804.6576911955. The cubic root of 647474 is about 86.5115535817.

The spelling of 647474 in words is "six hundred forty-seven thousand, four hundred seventy-four".