7819966 has 64 divisors (see below), whose sum is σ = 16174080. Its totient is φ = 2741760.

The previous prime is 7819951. The next prime is 7819969. The reversal of 7819966 is 6699187.

It is a super-2 number, since 2×7819966² = 122303736482312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7819969) 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, 75871 + ... + 75973.

It is an arithmetic number, because the mean of its divisors is an integer number (252720).

Almost surely, 2^7819966 is an apocalyptic number.

7819966 is an abundant number, since it is smaller than the sum of its proper divisors (8354114).

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

7819966 is a wasteful number, since it uses less digits than its factorization.

7819966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169.

The product of its digits is 163296, while the sum is 46.

The square root of 7819966 is about 2796.4202116277. The cubic root of 7819966 is about 198.4883195651.

The spelling of 7819966 in words is "seven million, eight hundred nineteen thousand, nine hundred sixty-six".