70244621 has 2 divisors, whose sum is σ = 70244622. Its totient is φ = 70244620.

The previous prime is 70244597. The next prime is 70244627. The reversal of 70244621 is 12644207.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39564100 + 30680521 = 6290^2 + 5539^2 .

It is an emirp because it is prime and its reverse (12644207) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70244621 - 2²² = 66050317 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70244627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35122310 + 35122311.

It is an arithmetic number, because the mean of its divisors is an integer number (35122311).

Almost surely, 2^70244621 is an apocalyptic number.

It is an amenable number.

70244621 is a deficient number, since it is larger than the sum of its proper divisors (1).

70244621 is an equidigital number, since it uses as much as digits as its factorization.

70244621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 70244621 is about 8381.2064167398. The cubic root of 70244621 is about 412.6080446699.

Adding to 70244621 its reverse (12644207), we get a palindrome (82888828).

The spelling of 70244621 in words is "seventy million, two hundred forty-four thousand, six hundred twenty-one".