70244381 has 2 divisors, whose sum is σ = 70244382. Its totient is φ = 70244380.

The previous prime is 70244371. The next prime is 70244417. The reversal of 70244381 is 18344207.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66504025 + 3740356 = 8155^2 + 1934^2 .

It is a cyclic number.

It is not a de Polignac number, because 70244381 - 2²² = 66050077 is a prime.

It is a super-2 number, since 2×70244381² = 9868546124146322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70244371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35122190 + 35122191.

It is an arithmetic number, because the mean of its divisors is an integer number (35122191).

Almost surely, 2^70244381 is an apocalyptic number.

It is an amenable number.

70244381 is a deficient number, since it is larger than the sum of its proper divisors (1).

70244381 is an equidigital number, since it uses as much as digits as its factorization.

70244381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 70244381 is about 8381.1920989797. The cubic root of 70244381 is about 412.6075747595.

Adding to 70244381 its reverse (18344207), we get a palindrome (88588588).

The spelling of 70244381 in words is "seventy million, two hundred forty-four thousand, three hundred eighty-one".