70305666 has 16 divisors (see below), whose sum is σ = 143265024. Its totient is φ = 22992944.

The previous prime is 70305629. The next prime is 70305667. The reversal of 70305666 is 66650307.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (70305667) 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, 110226 + ... + 110861.

It is an arithmetic number, because the mean of its divisors is an integer number (8954064).

Almost surely, 2^70305666 is an apocalyptic number.

70305666 is an abundant number, since it is smaller than the sum of its proper divisors (72959358).

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

70305666 is a wasteful number, since it uses less digits than its factorization.

70305666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221145.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 70305666 is about 8384.8474046938. The cubic root of 70305666 is about 412.7275336070.

The spelling of 70305666 in words is "seventy million, three hundred five thousand, six hundred sixty-six".