70356961 has 2 divisors, whose sum is σ = 70356962. Its totient is φ = 70356960.

The previous prime is 70356959. The next prime is 70356967. The reversal of 70356961 is 16965307.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48790225 + 21566736 = 6985^2 + 4644^2 .

It is an emirp because it is prime and its reverse (16965307) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70356961 - 2¹ = 70356959 is a prime.

It is a super-2 number, since 2×70356961² = 9900203922311042, which contains 22 as substring.

Together with 70356959, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70356961.

It is not a weakly prime, because it can be changed into another prime (70356967) 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, 35178480 + 35178481.

It is an arithmetic number, because the mean of its divisors is an integer number (35178481).

Almost surely, 2^70356961 is an apocalyptic number.

It is an amenable number.

70356961 is a deficient number, since it is larger than the sum of its proper divisors (1).

70356961 is an equidigital number, since it uses as much as digits as its factorization.

70356961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 70356961 is about 8387.9056384773. The cubic root of 70356961 is about 412.8278845145.

It can be divided in two parts, 70356 and 961, that added together give a palindrome (71317).

The spelling of 70356961 in words is "seventy million, three hundred fifty-six thousand, nine hundred sixty-one".