647506500 has 48 divisors (see below), whose sum is σ = 1885543296. Its totient is φ = 172668000.

The previous prime is 647506499. The next prime is 647506507. The reversal of 647506500 is 5605746.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647506507) 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 15 ways as a sum of consecutive naturals, for example, 214336 + ... + 217335.

It is an arithmetic number, because the mean of its divisors is an integer number (39282152).

Almost surely, 2^647506500 is an apocalyptic number.

647506500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

647506500 is an abundant number, since it is smaller than the sum of its proper divisors (1238036796).

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

647506500 is a wasteful number, since it uses less digits than its factorization.

647506500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431693 (or 431681 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 647506500 is about 25446.1490210208. The cubic root of 647506500 is about 865.1300104181.

The spelling of 647506500 in words is "six hundred forty-seven million, five hundred six thousand, five hundred".