487499640 has 64 divisors (see below), whose sum is σ = 1465084800. Its totient is φ = 129770112.

The previous prime is 487499591. The next prime is 487499659. The reversal of 487499640 is 46994784.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70999 + ... + 77561.

It is an arithmetic number, because the mean of its divisors is an integer number (22891950).

Almost surely, 2^487499640 is an apocalyptic number.

487499640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

487499640 is an abundant number, since it is smaller than the sum of its proper divisors (977585160).

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

487499640 is a wasteful number, since it uses less digits than its factorization.

487499640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7196 (or 7192 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 51.

The square root of 487499640 is about 22079.3940134235. The cubic root of 487499640 is about 787.0302645851.

The spelling of 487499640 in words is "four hundred eighty-seven million, four hundred ninety-nine thousand, six hundred forty".