647676120 has 384 divisors, whose sum is σ = 2510827200. Its totient is φ = 132378624.

The previous prime is 647676119. The next prime is 647676143. The reversal of 647676120 is 21676746.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2828166 + ... + 2828394.

Almost surely, 2^647676120 is an apocalyptic number.

647676120 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 647676120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1255413600).

647676120 is an abundant number, since it is smaller than the sum of its proper divisors (1863151080).

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

647676120 is a wasteful number, since it uses less digits than its factorization.

647676120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 296 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 647676120 is about 25449.4817236029. The cubic root of 647676120 is about 865.2055466177.

The spelling of 647676120 in words is "six hundred forty-seven million, six hundred seventy-six thousand, one hundred twenty".