70724413 has 2 divisors, whose sum is σ = 70724414. Its totient is φ = 70724412.

The previous prime is 70724387. The next prime is 70724429. The reversal of 70724413 is 31442707.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70257924 + 466489 = 8382^2 + 683^2 .

It is a cyclic number.

It is not a de Polignac number, because 70724413 - 2²¹ = 68627261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70724443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35362206 + 35362207.

It is an arithmetic number, because the mean of its divisors is an integer number (35362207).

Almost surely, 2^70724413 is an apocalyptic number.

It is an amenable number.

70724413 is a deficient number, since it is larger than the sum of its proper divisors (1).

70724413 is an equidigital number, since it uses as much as digits as its factorization.

70724413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 70724413 is about 8409.7807938138. The cubic root of 70724413 is about 413.5453264911.

The spelling of 70724413 in words is "seventy million, seven hundred twenty-four thousand, four hundred thirteen".