7867336645 has 64 divisors (see below), whose sum is σ = 11499724800. Its totient is φ = 5050729728.

The previous prime is 7867336639. The next prime is 7867336663. The reversal of 7867336645 is 5466337687.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 7867336645 - 2⁹ = 7867336133 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10732699 + ... + 10733431.

It is an arithmetic number, because the mean of its divisors is an integer number (179683200).

Almost surely, 2^7867336645 is an apocalyptic number.

It is an amenable number.

7867336645 is a deficient number, since it is larger than the sum of its proper divisors (3632388155).

7867336645 is a wasteful number, since it uses less digits than its factorization.

7867336645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034.

The product of its digits is 15240960, while the sum is 55.

The square root of 7867336645 is about 88698.0081230689. The cubic root of 7867336645 is about 1988.8830415262.

The spelling of 7867336645 in words is "seven billion, eight hundred sixty-seven million, three hundred thirty-six thousand, six hundred forty-five".