70324447 has 2 divisors, whose sum is σ = 70324448. Its totient is φ = 70324446.

The previous prime is 70324421. The next prime is 70324459. The reversal of 70324447 is 74442307.

It is a strong prime.

It is an emirp because it is prime and its reverse (74442307) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70324447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70324487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35162223 + 35162224.

It is an arithmetic number, because the mean of its divisors is an integer number (35162224).

Almost surely, 2^70324447 is an apocalyptic number.

70324447 is a deficient number, since it is larger than the sum of its proper divisors (1).

70324447 is an equidigital number, since it uses as much as digits as its factorization.

70324447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 31.

The square root of 70324447 is about 8385.9672668095. The cubic root of 70324447 is about 412.7642814545.

The spelling of 70324447 in words is "seventy million, three hundred twenty-four thousand, four hundred forty-seven".