665214447746 has 16 divisors (see below), whose sum is σ = 1027743149376. Its totient is φ = 322685210736.

The previous prime is 665214447721. The next prime is 665214447767. The reversal of 665214447746 is 647744412566.

665214447746 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×665214447746² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 665214447691 and 665214447700.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12927326 + ... + 12978681.

It is an arithmetic number, because the mean of its divisors is an integer number (64233946836).

Almost surely, 2^665214447746 is an apocalyptic number.

665214447746 is a deficient number, since it is larger than the sum of its proper divisors (362528701630).

665214447746 is a wasteful number, since it uses less digits than its factorization.

665214447746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25906393.

The product of its digits is 27095040, while the sum is 56.

The spelling of 665214447746 in words is "six hundred sixty-five billion, two hundred fourteen million, four hundred forty-seven thousand, seven hundred forty-six".