665379283 has 8 divisors (see below), whose sum is σ = 682634736. Its totient is φ = 648172800.

The previous prime is 665379263. The next prime is 665379287. The reversal of 665379283 is 382973566.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-665379283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (665379287) 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, 16123 + ... + 39883.

It is an arithmetic number, because the mean of its divisors is an integer number (85329342).

Almost surely, 2^665379283 is an apocalyptic number.

665379283 is a deficient number, since it is larger than the sum of its proper divisors (17255453).

665379283 is a wasteful number, since it uses less digits than its factorization.

665379283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24485.

The product of its digits is 1632960, while the sum is 49.

The square root of 665379283 is about 25794.9468501100. The cubic root of 665379283 is about 873.0177857780.

The spelling of 665379283 in words is "six hundred sixty-five million, three hundred seventy-nine thousand, two hundred eighty-three".