782991966 has 8 divisors (see below), whose sum is σ = 1565983944. Its totient is φ = 260997320.

The previous prime is 782991947. The next prime is 782991971. The reversal of 782991966 is 669199287.

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

782991966 is an admirable number.

It is a super-2 number, since 2×782991966² = 1226152837641090312, which contains 22 as substring.

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, 65249325 + ... + 65249336.

It is an arithmetic number, because the mean of its divisors is an integer number (195747993).

Almost surely, 2^782991966 is an apocalyptic number.

782991966 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

782991966 is a wasteful number, since it uses less digits than its factorization.

782991966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130498666.

The product of its digits is 2939328, while the sum is 57.

The square root of 782991966 is about 27981.9936030298. The cubic root of 782991966 is about 921.6918953331.

The spelling of 782991966 in words is "seven hundred eighty-two million, nine hundred ninety-one thousand, nine hundred sixty-six".