70079281 has 2 divisors, whose sum is σ = 70079282. Its totient is φ = 70079280.

The previous prime is 70079279. The next prime is 70079333. The reversal of 70079281 is 18297007.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42042256 + 28037025 = 6484^2 + 5295^2 .

It is a cyclic number.

It is not a de Polignac number, because 70079281 - 2¹ = 70079279 is a prime.

It is a super-2 number, since 2×70079281² = 9822211250953922, which contains 22 as substring.

Together with 70079279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (70079231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35039640 + 35039641.

It is an arithmetic number, because the mean of its divisors is an integer number (35039641).

Almost surely, 2^70079281 is an apocalyptic number.

It is an amenable number.

70079281 is a deficient number, since it is larger than the sum of its proper divisors (1).

70079281 is an equidigital number, since it uses as much as digits as its factorization.

70079281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 70079281 is about 8371.3368705363. The cubic root of 70079281 is about 412.2840615732.

The spelling of 70079281 in words is "seventy million, seventy-nine thousand, two hundred eighty-one".