665956342 has 8 divisors (see below), whose sum is σ = 1017782496. Its totient is φ = 326695512.

The previous prime is 665956331. The next prime is 665956381. The reversal of 665956342 is 243659566.

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 = 665956292 and 665956301.

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, 3141198 + ... + 3141409.

It is an arithmetic number, because the mean of its divisors is an integer number (127222812).

Almost surely, 2^665956342 is an apocalyptic number.

665956342 is a deficient number, since it is larger than the sum of its proper divisors (351826154).

665956342 is a wasteful number, since it uses less digits than its factorization.

665956342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6282662.

The product of its digits is 1166400, while the sum is 46.

The square root of 665956342 is about 25806.1299306967. The cubic root of 665956342 is about 873.2700916011.

It can be divided in two parts, 6659 and 56342, that added together give a square (63001 = 251²).

The spelling of 665956342 in words is "six hundred sixty-five million, nine hundred fifty-six thousand, three hundred forty-two".