7040666 has 4 divisors (see below), whose sum is σ = 10561002. Its totient is φ = 3520332.

The previous prime is 7040653. The next prime is 7040687. The reversal of 7040666 is 6660407.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5784025 + 1256641 = 2405^2 + 1121^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1760165 + ... + 1760168.

Almost surely, 2^7040666 is an apocalyptic number.

7040666 is a deficient number, since it is larger than the sum of its proper divisors (3520336).

7040666 is a wasteful number, since it uses less digits than its factorization.

7040666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3520335.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 7040666 is about 2653.4253334134. The cubic root of 7040666 is about 191.6628378147.

The spelling of 7040666 in words is "seven million, forty thousand, six hundred sixty-six".