7000066 has 4 divisors (see below), whose sum is σ = 10500102. Its totient is φ = 3500032.

The previous prime is 7000061. The next prime is 7000069. The reversal of 7000066 is 6600007.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6600007 = 167 ⋅39521.

It can be written as a sum of positive squares in only one way, i.e., 3884841 + 3115225 = 1971^2 + 1765^2 .

It is not an unprimeable number, because it can be changed into a prime (7000061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1750015 + ... + 1750018.

Almost surely, 2^7000066 is an apocalyptic number.

7000066 is a deficient number, since it is larger than the sum of its proper divisors (3500036).

7000066 is a wasteful number, since it uses less digits than its factorization.

7000066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3500035.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 7000066 is about 2645.7637838628. The cubic root of 7000066 is about 191.2937194823.

The spelling of 7000066 in words is "seven million, sixty-six", and thus it is an aban number and an uban number.