70986361 has 2 divisors, whose sum is σ = 70986362. Its totient is φ = 70986360.

The previous prime is 70986347. The next prime is 70986473. The reversal of 70986361 is 16368907.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63696361 + 7290000 = 7981^2 + 2700^2 .

It is an emirp because it is prime and its reverse (16368907) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70986361 - 2⁵ = 70986329 is a prime.

It is not a weakly prime, because it can be changed into another prime (70986341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35493180 + 35493181.

It is an arithmetic number, because the mean of its divisors is an integer number (35493181).

Almost surely, 2^70986361 is an apocalyptic number.

It is an amenable number.

70986361 is a deficient number, since it is larger than the sum of its proper divisors (1).

70986361 is an equidigital number, since it uses as much as digits as its factorization.

70986361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 70986361 is about 8425.3404085532. The cubic root of 70986361 is about 414.0552584024.

The spelling of 70986361 in words is "seventy million, nine hundred eighty-six thousand, three hundred sixty-one".