665427382 has 4 divisors (see below), whose sum is σ = 998141076. Its totient is φ = 332713690.

The previous prime is 665427353. The next prime is 665427397. The reversal of 665427382 is 283724566.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166356844 + ... + 166356847.

It is an arithmetic number, because the mean of its divisors is an integer number (249535269).

Almost surely, 2^665427382 is an apocalyptic number.

665427382 is a deficient number, since it is larger than the sum of its proper divisors (332713694).

665427382 is a wasteful number, since it uses less digits than its factorization.

665427382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332713693.

The product of its digits is 483840, while the sum is 43.

The square root of 665427382 is about 25795.8791670298. The cubic root of 665427382 is about 873.0388215349.

The spelling of 665427382 in words is "six hundred sixty-five million, four hundred twenty-seven thousand, three hundred eighty-two".