7801066 has 16 divisors (see below), whose sum is σ = 14402304. Its totient is φ = 3086064.

The previous prime is 7801063. The next prime is 7801067. The reversal of 7801066 is 6601087.

7801066 is a modest number, since divided by 1066 gives 78 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7801063) 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, 21250 + ... + 21613.

It is an arithmetic number, because the mean of its divisors is an integer number (900144).

Almost surely, 2^7801066 is an apocalyptic number.

7801066 is a deficient number, since it is larger than the sum of its proper divisors (6601238).

7801066 is a wasteful number, since it uses less digits than its factorization.

7801066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42885.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 7801066 is about 2793.0388468476. The cubic root of 7801066 is about 198.3282824001.

The spelling of 7801066 in words is "seven million, eight hundred one thousand, sixty-six".