2681007645 has 32 divisors (see below), whose sum is σ = 4461393024. Its totient is φ = 1373702400.

The previous prime is 2681007629. The next prime is 2681007647. The reversal of 2681007645 is 5467001862.

It is not a de Polignac number, because 2681007645 - 2⁴ = 2681007629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2681007647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5275 + ... + 73415.

It is an arithmetic number, because the mean of its divisors is an integer number (139418532).

Almost surely, 2^2681007645 is an apocalyptic number.

It is an amenable number.

2681007645 is a deficient number, since it is larger than the sum of its proper divisors (1780385379).

2681007645 is a wasteful number, since it uses less digits than its factorization.

2681007645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68253.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 2681007645 is about 51778.4476882032. The cubic root of 2681007645 is about 1389.2039754952.

The spelling of 2681007645 in words is "two billion, six hundred eighty-one million, seven thousand, six hundred forty-five".