665366446 has 16 divisors (see below), whose sum is σ = 1009635840. Its totient is φ = 328835320.

The previous prime is 665366437. The next prime is 665366447. The reversal of 665366446 is 644663566.

It is a junction number, because it is equal to n+sod(n) for n = 665366396 and 665366405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665366447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99261 + ... + 105751.

It is an arithmetic number, because the mean of its divisors is an integer number (63102240).

Almost surely, 2^665366446 is an apocalyptic number.

665366446 is a deficient number, since it is larger than the sum of its proper divisors (344269394).

665366446 is a wasteful number, since it uses less digits than its factorization.

665366446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7079.

The product of its digits is 1866240, while the sum is 46.

The square root of 665366446 is about 25794.6980211050. The cubic root of 665366446 is about 873.0121714355.

The spelling of 665366446 in words is "six hundred sixty-five million, three hundred sixty-six thousand, four hundred forty-six".