665613046 has 32 divisors (see below), whose sum is σ = 1182392640. Its totient is φ = 274960896.

The previous prime is 665612989. The next prime is 665613049. The reversal of 665613046 is 640316566.

It is a junction number, because it is equal to n+sod(n) for n = 665612996 and 665613014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665613049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 346986 + ... + 348898.

It is an arithmetic number, because the mean of its divisors is an integer number (36949770).

Almost surely, 2^665613046 is an apocalyptic number.

665613046 is a deficient number, since it is larger than the sum of its proper divisors (516779594).

665613046 is a wasteful number, since it uses less digits than its factorization.

665613046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2808.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 665613046 is about 25799.4776303707. The cubic root of 665613046 is about 873.1200108634.

The spelling of 665613046 in words is "six hundred sixty-five million, six hundred thirteen thousand, forty-six".