70570889 has 2 divisors, whose sum is σ = 70570890. Its totient is φ = 70570888.

The previous prime is 70570853. The next prime is 70570897. The reversal of 70570889 is 98807507.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70476025 + 94864 = 8395^2 + 308^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70570889 is a prime.

It is not a weakly prime, because it can be changed into another prime (70570589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35285444 + 35285445.

It is an arithmetic number, because the mean of its divisors is an integer number (35285445).

Almost surely, 2^70570889 is an apocalyptic number.

It is an amenable number.

70570889 is a deficient number, since it is larger than the sum of its proper divisors (1).

70570889 is an equidigital number, since it uses as much as digits as its factorization.

70570889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 44.

The square root of 70570889 is about 8400.6481297576. The cubic root of 70570889 is about 413.2458771927.

The spelling of 70570889 in words is "seventy million, five hundred seventy thousand, eight hundred eighty-nine".