70666659 has 12 divisors (see below), whose sum is σ = 116656176. Its totient is φ = 40380912.

The previous prime is 70666613. The next prime is 70666663. The reversal of 70666659 is 95666607.

It is not a de Polignac number, because 70666659 - 2⁹ = 70666147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70666669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 560784 + ... + 560909.

It is an arithmetic number, because the mean of its divisors is an integer number (9721348).

Almost surely, 2^70666659 is an apocalyptic number.

70666659 is a deficient number, since it is larger than the sum of its proper divisors (45989517).

70666659 is a wasteful number, since it uses less digits than its factorization.

70666659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121706 (or 1121703 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 70666659 is about 8406.3463526077. The cubic root of 70666659 is about 413.4327279321.

The spelling of 70666659 in words is "seventy million, six hundred sixty-six thousand, six hundred fifty-nine".