665832783 has 32 divisors (see below), whose sum is σ = 1115338752. Its totient is φ = 343231200.

The previous prime is 665832749. The next prime is 665832793. The reversal of 665832783 is 387238566.

It is not a de Polignac number, because 665832783 - 2⁶ = 665832719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665832733) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19260 + ... + 41262.

It is an arithmetic number, because the mean of its divisors is an integer number (34854336).

Almost surely, 2^665832783 is an apocalyptic number.

665832783 is a deficient number, since it is larger than the sum of its proper divisors (449505969).

665832783 is a wasteful number, since it uses less digits than its factorization.

665832783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22155.

The product of its digits is 1451520, while the sum is 48.

The square root of 665832783 is about 25803.7358341772. The cubic root of 665832783 is about 873.2160805265.

The spelling of 665832783 in words is "six hundred sixty-five million, eight hundred thirty-two thousand, seven hundred eighty-three".