70666664 has 16 divisors (see below), whose sum is σ = 132930720. Its totient is φ = 35218480.

The previous prime is 70666663. The next prime is 70666669. The reversal of 70666664 is 46666607.

It is not an unprimeable number, because it can be changed into a prime (70666663) 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 3 ways as a sum of consecutive naturals, for example, 11714 + ... + 16689.

It is an arithmetic number, because the mean of its divisors is an integer number (8308170).

Almost surely, 2^70666664 is an apocalyptic number.

It is an amenable number.

70666664 is a deficient number, since it is larger than the sum of its proper divisors (62264056).

70666664 is a wasteful number, since it uses less digits than its factorization.

70666664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28720 (or 28716 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 41.

The square root of 70666664 is about 8406.3466500020. The cubic root of 70666664 is about 413.4327376828.

The spelling of 70666664 in words is "seventy million, six hundred sixty-six thousand, six hundred sixty-four".