2665290140 has 24 divisors (see below), whose sum is σ = 5840462880. Its totient is φ = 1019763008.

The previous prime is 2665290077. The next prime is 2665290143. The reversal of 2665290140 is 410925662.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2665290140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2665290143) 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, 2896595 + ... + 2897514.

It is an arithmetic number, because the mean of its divisors is an integer number (243352620).

Almost surely, 2^2665290140 is an apocalyptic number.

2665290140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2665290140 is an abundant number, since it is smaller than the sum of its proper divisors (3175172740).

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

2665290140 is a wasteful number, since it uses less digits than its factorization.

2665290140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5794141 (or 5794139 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 2665290140 is about 51626.4480668581. The cubic root of 2665290140 is about 1386.4839000623.

The spelling of 2665290140 in words is "two billion, six hundred sixty-five million, two hundred ninety thousand, one hundred forty".