7866097644 has 12 divisors (see below), whose sum is σ = 18354227864. Its totient is φ = 2622032544.

The previous prime is 7866097607. The next prime is 7866097711. The reversal of 7866097644 is 4467906687.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327754057 + ... + 327754080.

Almost surely, 2^7866097644 is an apocalyptic number.

It is an amenable number.

7866097644 is an abundant number, since it is smaller than the sum of its proper divisors (10488130220).

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

7866097644 is a wasteful number, since it uses less digits than its factorization.

7866097644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655508144 (or 655508142 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 57.

The square root of 7866097644 is about 88691.0234691200. The cubic root of 7866097644 is about 1988.7786284929.

The spelling of 7866097644 in words is "seven billion, eight hundred sixty-six million, ninety-seven thousand, six hundred forty-four".