2642560739 has 24 divisors (see below), whose sum is σ = 3330417888. Its totient is φ = 2078213760.

The previous prime is 2642560673. The next prime is 2642560751. The reversal of 2642560739 is 9370652462.

It is a de Polignac number, because none of the positive numbers 2^k-2642560739 is a prime.

It is a super-2 number, since 2×2642560739² = 13966254518608452242, which contains 22 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2642560739.

It is not an unprimeable number, because it can be changed into a prime (2642560639) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93959 + ... + 118799.

It is an arithmetic number, because the mean of its divisors is an integer number (138767412).

Almost surely, 2^2642560739 is an apocalyptic number.

2642560739 is a deficient number, since it is larger than the sum of its proper divisors (687857149).

2642560739 is a wasteful number, since it uses less digits than its factorization.

2642560739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25035 (or 25028 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 44.

The square root of 2642560739 is about 51405.8434324348. The cubic root of 2642560739 is about 1382.5313649884.

The spelling of 2642560739 in words is "two billion, six hundred forty-two million, five hundred sixty thousand, seven hundred thirty-nine".