2661584862 has 16 divisors (see below), whose sum is σ = 5467039632. Its totient is φ = 863216640.

The previous prime is 2661584833. The next prime is 2661584867. The reversal of 2661584862 is 2684851662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661584867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5994339 + ... + 5994782.

It is an arithmetic number, because the mean of its divisors is an integer number (341689977).

Almost surely, 2^2661584862 is an apocalyptic number.

2661584862 is an abundant number, since it is smaller than the sum of its proper divisors (2805454770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2661584862 is a wasteful number, since it uses less digits than its factorization.

2661584862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11989163.

The product of its digits is 1105920, while the sum is 48.

The square root of 2661584862 is about 51590.5501230603. The cubic root of 2661584862 is about 1385.8411069096.

The spelling of 2661584862 in words is "two billion, six hundred sixty-one million, five hundred eighty-four thousand, eight hundred sixty-two".