487157861 has 8 divisors (see below), whose sum is σ = 491568000. Its totient is φ = 482763600.

The previous prime is 487157837. The next prime is 487157939. The reversal of 487157861 is 168751784.

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

It is a cyclic number.

It is not a de Polignac number, because 487157861 - 2²⁶ = 420048997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487157261) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 62615 + ... + 69963.

It is an arithmetic number, because the mean of its divisors is an integer number (61446000).

Almost surely, 2^487157861 is an apocalyptic number.

It is an amenable number.

487157861 is a deficient number, since it is larger than the sum of its proper divisors (4410139).

487157861 is a wasteful number, since it uses less digits than its factorization.

487157861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7939.

The product of its digits is 376320, while the sum is 47.

The square root of 487157861 is about 22071.6528832799. The cubic root of 487157861 is about 786.8462963788.

The spelling of 487157861 in words is "four hundred eighty-seven million, one hundred fifty-seven thousand, eight hundred sixty-one".