70007261 has 2 divisors, whose sum is σ = 70007262. Its totient is φ = 70007260.

The previous prime is 70007257. The next prime is 70007279. The reversal of 70007261 is 16270007.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45306361 + 24700900 = 6731^2 + 4970^2 .

It is a cyclic number.

It is not a de Polignac number, because 70007261 - 2² = 70007257 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 (70007281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35003630 + 35003631.

It is an arithmetic number, because the mean of its divisors is an integer number (35003631).

Almost surely, 2^70007261 is an apocalyptic number.

It is an amenable number.

70007261 is a deficient number, since it is larger than the sum of its proper divisors (1).

70007261 is an equidigital number, since it uses as much as digits as its factorization.

70007261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 70007261 is about 8367.0341818353. The cubic root of 70007261 is about 412.1427793227.

Adding to 70007261 its reverse (16270007), we get a palindrome (86277268).

The spelling of 70007261 in words is "seventy million, seven thousand, two hundred sixty-one".