647480 has 16 divisors (see below), whose sum is σ = 1456920. Its totient is φ = 258976.

The previous prime is 647477. The next prime is 647489. The reversal of 647480 is 84746.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 647480.

It is not an unprimeable number, because it can be changed into a prime (647489) 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, 8054 + ... + 8133.

2⁶⁴⁷⁴⁸⁰ is an apocalyptic number.

It is an amenable number.

647480 is an abundant number, since it is smaller than the sum of its proper divisors (809440).

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

647480 is a wasteful number, since it uses less digits than its factorization.

647480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16198 (or 16194 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 647480 is about 804.6614194803. The cubic root of 647480 is about 86.5118208087.

The spelling of 647480 in words is "six hundred forty-seven thousand, four hundred eighty".