70888817 has 2 divisors, whose sum is σ = 70888818. Its totient is φ = 70888816.

The previous prime is 70888813. The next prime is 70888819. The reversal of 70888817 is 71888807.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65431921 + 5456896 = 8089^2 + 2336^2 .

It is a cyclic number.

It is not a de Polignac number, because 70888817 - 2² = 70888813 is a prime.

Together with 70888819, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70888813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35444408 + 35444409.

It is an arithmetic number, because the mean of its divisors is an integer number (35444409).

Almost surely, 2^70888817 is an apocalyptic number.

It is an amenable number.

70888817 is a deficient number, since it is larger than the sum of its proper divisors (1).

70888817 is an equidigital number, since it uses as much as digits as its factorization.

70888817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 200704, while the sum is 47.

The square root of 70888817 is about 8419.5496910464. The cubic root of 70888817 is about 413.8655171651.

The spelling of 70888817 in words is "seventy million, eight hundred eighty-eight thousand, eight hundred seventeen".