7801966 has 8 divisors (see below), whose sum is σ = 11714904. Its totient is φ = 3897000.

The previous prime is 7801943. The next prime is 7801973. The reversal of 7801966 is 6691087.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2341 + ... + 4591.

It is an arithmetic number, because the mean of its divisors is an integer number (1464363).

Almost surely, 2^7801966 is an apocalyptic number.

7801966 is a deficient number, since it is larger than the sum of its proper divisors (3912938).

7801966 is a wasteful number, since it uses less digits than its factorization.

7801966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3986.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 7801966 is about 2793.1999570385. The cubic root of 7801966 is about 198.3359090753.

The spelling of 7801966 in words is "seven million, eight hundred one thousand, nine hundred sixty-six".