70916666 has 4 divisors (see below), whose sum is σ = 106375002. Its totient is φ = 35458332.

The previous prime is 70916647. The next prime is 70916689. The reversal of 70916666 is 66661907.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66661907 = 13 ⋅5127839.

It can be written as a sum of positive squares in only one way, i.e., 64561225 + 6355441 = 8035^2 + 2521^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17729165 + ... + 17729168.

Almost surely, 2^70916666 is an apocalyptic number.

70916666 is a deficient number, since it is larger than the sum of its proper divisors (35458336).

70916666 is a wasteful number, since it uses less digits than its factorization.

70916666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35458335.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 70916666 is about 8421.2033581906. The cubic root of 70916666 is about 413.9197063978.

The spelling of 70916666 in words is "seventy million, nine hundred sixteen thousand, six hundred sixty-six".