2665758740 has 24 divisors (see below), whose sum is σ = 5600079072. Its totient is φ = 1065925280.

The previous prime is 2665758707. The next prime is 2665758749. The reversal of 2665758740 is 478575662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2665758749) 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, 38087 + ... + 82353.

It is an arithmetic number, because the mean of its divisors is an integer number (233336628).

Almost surely, 2^2665758740 is an apocalyptic number.

2665758740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2665758740 is an abundant number, since it is smaller than the sum of its proper divisors (2934320332).

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

2665758740 is a wasteful number, since it uses less digits than its factorization.

2665758740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47287 (or 47285 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 50.

The square root of 2665758740 is about 51630.9862388857. The cubic root of 2665758740 is about 1386.5651505390.

The spelling of 2665758740 in words is "two billion, six hundred sixty-five million, seven hundred fifty-eight thousand, seven hundred forty".