487712661 has 4 divisors (see below), whose sum is σ = 650283552. Its totient is φ = 325141772.

The previous prime is 487712647. The next prime is 487712681. The reversal of 487712661 is 166217784.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 487712661 - 2⁶ = 487712597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487712681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81285441 + ... + 81285446.

It is an arithmetic number, because the mean of its divisors is an integer number (162570888).

Almost surely, 2^487712661 is an apocalyptic number.

It is an amenable number.

487712661 is a deficient number, since it is larger than the sum of its proper divisors (162570891).

487712661 is a wasteful number, since it uses less digits than its factorization.

487712661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162570890.

The product of its digits is 112896, while the sum is 42.

The square root of 487712661 is about 22084.2174640624. The cubic root of 487712661 is about 787.1448831724.

The spelling of 487712661 in words is "four hundred eighty-seven million, seven hundred twelve thousand, six hundred sixty-one".