7820066 has 8 divisors (see below), whose sum is σ = 12003024. Its totient is φ = 3819060.

The previous prime is 7820063. The next prime is 7820083. The reversal of 7820066 is 6600287.

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

It is a super-2 number, since 2×7820066² = 122306864488712, which contains 22 as substring.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (7820063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45380 + ... + 45551.

It is an arithmetic number, because the mean of its divisors is an integer number (1500378).

Almost surely, 2^7820066 is an apocalyptic number.

7820066 is a deficient number, since it is larger than the sum of its proper divisors (4182958).

7820066 is a wasteful number, since it uses less digits than its factorization.

7820066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90976.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 7820066 is about 2796.4380915729. The cubic root of 7820066 is about 198.4891656365.

The spelling of 7820066 in words is "seven million, eight hundred twenty thousand, sixty-six".