647486 has 12 divisors (see below), whose sum is σ = 1129968. Its totient is φ = 277452.

The previous prime is 647477. The next prime is 647489. The reversal of 647486 is 684746.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647489) 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 5 ways as a sum of consecutive naturals, for example, 3206 + ... + 3401.

It is an arithmetic number, because the mean of its divisors is an integer number (94164).

2⁶⁴⁷⁴⁸⁶ is an apocalyptic number.

647486 is a deficient number, since it is larger than the sum of its proper divisors (482482).

647486 is a wasteful number, since it uses less digits than its factorization.

647486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6623 (or 6616 counting only the distinct ones).

The product of its digits is 32256, while the sum is 35.

The square root of 647486 is about 804.6651477478. The cubic root of 647486 is about 86.5120880341.

The spelling of 647486 in words is "six hundred forty-seven thousand, four hundred eighty-six".