647046 has 24 divisors (see below), whose sum is σ = 1419600. Its totient is φ = 212976.

The previous prime is 647039. The next prime is 647047. The reversal of 647046 is 640746.

It is a super-2 number, since 2×647046² = 837337052232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1680 + ... + 2028.

It is an arithmetic number, because the mean of its divisors is an integer number (59150).

2⁶⁴⁷⁰⁴⁶ is an apocalyptic number.

647046 is an abundant number, since it is smaller than the sum of its proper divisors (772554).

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

647046 is a wasteful number, since it uses less digits than its factorization.

647046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 647046 is about 804.3916956309. The cubic root of 647046 is about 86.4924871241.

The spelling of 647046 in words is "six hundred forty-seven thousand, forty-six".