70696666 has 4 divisors (see below), whose sum is σ = 106045002. Its totient is φ = 35348332.

The previous prime is 70696649. The next prime is 70696699. The reversal of 70696666 is 66669607.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66669607 = 2473 ⋅26959.

It can be written as a sum of positive squares in only one way, i.e., 45846441 + 24850225 = 6771^2 + 4985^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17674165 + ... + 17674168.

Almost surely, 2^70696666 is an apocalyptic number.

70696666 is a deficient number, since it is larger than the sum of its proper divisors (35348336).

70696666 is a wasteful number, since it uses less digits than its factorization.

70696666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35348335.

The product of its (nonzero) digits is 489888, while the sum is 46.

The square root of 70696666 is about 8408.1309456977. The cubic root of 70696666 is about 413.4912379399.

The spelling of 70696666 in words is "seventy million, six hundred ninety-six thousand, six hundred sixty-six".