70000066 has 12 divisors (see below), whose sum is σ = 110818422. Its totient is φ = 33157584.

The previous prime is 70000057. The next prime is 70000069. The reversal of 70000066 is 66000007.

It can be written as a sum of positive squares in only one way, i.e., 46526041 + 23474025 = 6821^2 + 4845^2 .

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 69999998 and 70000052.

It is not an unprimeable number, because it can be changed into a prime (70000069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47755 + ... + 49198.

Almost surely, 2^70000066 is an apocalyptic number.

70000066 is a deficient number, since it is larger than the sum of its proper divisors (40818356).

70000066 is a wasteful number, since it uses less digits than its factorization.

70000066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96993 (or 96974 counting only the distinct ones).

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

The square root of 70000066 is about 8366.6042095942. The cubic root of 70000066 is about 412.1286595069.

The spelling of 70000066 in words is "seventy million, sixty-six", and thus it is an aban number and an uban number.