665382640246 has 8 divisors (see below), whose sum is σ = 1032490303920. Its totient is φ = 321219205608.

The previous prime is 665382640231. The next prime is 665382640277. The reversal of 665382640246 is 642046283566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 665382640193 and 665382640202.

It is a congruent number.

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, 5736057186 + ... + 5736057301.

It is an arithmetic number, because the mean of its divisors is an integer number (129061287990).

Almost surely, 2^665382640246 is an apocalyptic number.

665382640246 is a deficient number, since it is larger than the sum of its proper divisors (367107663674).

665382640246 is a wasteful number, since it uses less digits than its factorization.

665382640246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11472114518.

The product of its (nonzero) digits is 9953280, while the sum is 52.

The spelling of 665382640246 in words is "six hundred sixty-five billion, three hundred eighty-two million, six hundred forty thousand, two hundred forty-six".