487921768 has 8 divisors (see below), whose sum is σ = 914853330. Its totient is φ = 243960880.

The previous prime is 487921757. The next prime is 487921769. The reversal of 487921768 is 867129784.

It can be written as a sum of positive squares in only one way, i.e., 484088004 + 3833764 = 22002^2 + 1958^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (487921769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30495103 + ... + 30495118.

Almost surely, 2^487921768 is an apocalyptic number.

It is an amenable number.

487921768 is a deficient number, since it is larger than the sum of its proper divisors (426931562).

487921768 is a wasteful number, since it uses less digits than its factorization.

487921768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60990227 (or 60990223 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 52.

The square root of 487921768 is about 22088.9512652819. The cubic root of 487921768 is about 787.2573633273.

The spelling of 487921768 in words is "four hundred eighty-seven million, nine hundred twenty-one thousand, seven hundred sixty-eight".