70020689 has 2 divisors, whose sum is σ = 70020690. Its totient is φ = 70020688.

The previous prime is 70020677. The next prime is 70020701. The reversal of 70020689 is 98602007.

It is a balanced prime because it is at equal distance from previous prime (70020677) and next prime (70020701).

It can be written as a sum of positive squares in only one way, i.e., 67486225 + 2534464 = 8215^2 + 1592^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70020689 is a prime.

It is not a weakly prime, because it can be changed into another prime (70020649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35010344 + 35010345.

It is an arithmetic number, because the mean of its divisors is an integer number (35010345).

Almost surely, 2^70020689 is an apocalyptic number.

It is an amenable number.

70020689 is a deficient number, since it is larger than the sum of its proper divisors (1).

70020689 is an equidigital number, since it uses as much as digits as its factorization.

70020689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 70020689 is about 8367.8365782322. The cubic root of 70020689 is about 412.1691284917.

The spelling of 70020689 in words is "seventy million, twenty thousand, six hundred eighty-nine".