70706217 has 4 divisors (see below), whose sum is σ = 94274960. Its totient is φ = 47137476.

The previous prime is 70706197. The next prime is 70706227. The reversal of 70706217 is 71260707.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 70706217 - 2²³ = 62317609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70706227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11784367 + ... + 11784372.

It is an arithmetic number, because the mean of its divisors is an integer number (23568740).

Almost surely, 2^70706217 is an apocalyptic number.

It is an amenable number.

70706217 is a deficient number, since it is larger than the sum of its proper divisors (23568743).

70706217 is a wasteful number, since it uses less digits than its factorization.

70706217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23568742.

The product of its (nonzero) digits is 4116, while the sum is 30.

The square root of 70706217 is about 8408.6988886510. The cubic root of 70706217 is about 413.5098577571.

The spelling of 70706217 in words is "seventy million, seven hundred six thousand, two hundred seventeen".