487641578 has 4 divisors (see below), whose sum is σ = 731462370. Its totient is φ = 243820788.

The previous prime is 487641559. The next prime is 487641599. The reversal of 487641578 is 875146784.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 447026449 + 40615129 = 21143^2 + 6373^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121910393 + ... + 121910396.

Almost surely, 2^487641578 is an apocalyptic number.

487641578 is a deficient number, since it is larger than the sum of its proper divisors (243820792).

487641578 is a wasteful number, since it uses less digits than its factorization.

487641578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243820791.

The product of its digits is 1505280, while the sum is 50.

The square root of 487641578 is about 22082.6080434354. The cubic root of 487641578 is about 787.1066397949.

The spelling of 487641578 in words is "four hundred eighty-seven million, six hundred forty-one thousand, five hundred seventy-eight".