4487863661 has 4 divisors (see below), whose sum is σ = 4682988192. Its totient is φ = 4292739132.

The previous prime is 4487863621. The next prime is 4487863663. The reversal of 4487863661 is 1663687844.

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 4487863661 - 2²² = 4483669357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4487863663) 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, 97562231 + ... + 97562276.

It is an arithmetic number, because the mean of its divisors is an integer number (1170747048).

Almost surely, 2^4487863661 is an apocalyptic number.

It is an amenable number.

4487863661 is a deficient number, since it is larger than the sum of its proper divisors (195124531).

4487863661 is a wasteful number, since it uses less digits than its factorization.

4487863661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195124530.

The product of its digits is 4644864, while the sum is 53.

The square root of 4487863661 is about 66991.5193214783. The cubic root of 4487863661 is about 1649.4780915604.

The spelling of 4487863661 in words is "four billion, four hundred eighty-seven million, eight hundred sixty-three thousand, six hundred sixty-one".