70989697 has 2 divisors, whose sum is σ = 70989698. Its totient is φ = 70989696.

The previous prime is 70989679. The next prime is 70989703. The reversal of 70989697 is 79698907.

Together with previous prime (70989679) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70963776 + 25921 = 8424^2 + 161^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70989697 is a prime.

It is not a weakly prime, because it can be changed into another prime (70989617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35494848 + 35494849.

It is an arithmetic number, because the mean of its divisors is an integer number (35494849).

Almost surely, 2^70989697 is an apocalyptic number.

It is an amenable number.

70989697 is a deficient number, since it is larger than the sum of its proper divisors (1).

70989697 is an equidigital number, since it uses as much as digits as its factorization.

70989697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1714608, while the sum is 55.

The square root of 70989697 is about 8425.5383804241. The cubic root of 70989697 is about 414.0617444685.

The spelling of 70989697 in words is "seventy million, nine hundred eighty-nine thousand, six hundred ninety-seven".