70216901 has 2 divisors, whose sum is σ = 70216902. Its totient is φ = 70216900.

The previous prime is 70216889. The next prime is 70216933. The reversal of 70216901 is 10961207.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70123876 + 93025 = 8374^2 + 305^2 .

It is an emirp because it is prime and its reverse (10961207) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70216901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70216961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35108450 + 35108451.

It is an arithmetic number, because the mean of its divisors is an integer number (35108451).

Almost surely, 2^70216901 is an apocalyptic number.

It is an amenable number.

70216901 is a deficient number, since it is larger than the sum of its proper divisors (1).

70216901 is an equidigital number, since it uses as much as digits as its factorization.

70216901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 70216901 is about 8379.5525536869. The cubic root of 70216901 is about 412.5537629344.

It can be divided in two parts, 70216 and 901, that added together give a palindrome (71117).

The spelling of 70216901 in words is "seventy million, two hundred sixteen thousand, nine hundred one".