766667342665 has 16 divisors (see below), whose sum is σ = 1056412586880. Its totient is φ = 523223205120.

The previous prime is 766667342659. The next prime is 766667342681. The reversal of 766667342665 is 566243766667.

It is a happy number.

It is not a de Polignac number, because 766667342665 - 2³ = 766667342657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 766667342597 and 766667342606.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51899680 + ... + 51914449.

It is an arithmetic number, because the mean of its divisors is an integer number (66025786680).

Almost surely, 2^766667342665 is an apocalyptic number.

It is an amenable number.

766667342665 is a deficient number, since it is larger than the sum of its proper divisors (289745244215).

766667342665 is a wasteful number, since it uses less digits than its factorization.

766667342665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103814352.

The product of its digits is 274337280, while the sum is 64.

The spelling of 766667342665 in words is "seven hundred sixty-six billion, six hundred sixty-seven million, three hundred forty-two thousand, six hundred sixty-five".