487061639 has 8 divisors (see below), whose sum is σ = 510652032. Its totient is φ = 463672440.

The previous prime is 487061587. The next prime is 487061657. The reversal of 487061639 is 936160784.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-487061639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 487061639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487067639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45329 + ... + 55034.

It is an arithmetic number, because the mean of its divisors is an integer number (63831504).

Almost surely, 2^487061639 is an apocalyptic number.

487061639 is a deficient number, since it is larger than the sum of its proper divisors (23590393).

487061639 is a wasteful number, since it uses less digits than its factorization.

487061639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100597.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 487061639 is about 22069.4730113793. The cubic root of 487061639 is about 786.7944877723.

The spelling of 487061639 in words is "four hundred eighty-seven million, sixty-one thousand, six hundred thirty-nine".