2864661040 has 40 divisors (see below), whose sum is σ = 6949921248. Its totient is φ = 1096043520.

The previous prime is 2864660999. The next prime is 2864661049. The reversal of 2864661040 is 401664682.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (2864661049) 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, 776601 + ... + 780280.

Almost surely, 2^2864661040 is an apocalyptic number.

2864661040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2864661040 is an abundant number, since it is smaller than the sum of its proper divisors (4085260208).

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

2864661040 is a wasteful number, since it uses less digits than its factorization.

2864661040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556917 (or 1556911 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 2864661040 is about 53522.5283408772. The cubic root of 2864661040 is about 1420.2269425025.

The spelling of 2864661040 in words is "two billion, eight hundred sixty-four million, six hundred sixty-one thousand, forty".