70718447 has 2 divisors, whose sum is σ = 70718448. Its totient is φ = 70718446.

The previous prime is 70718423. The next prime is 70718519. The reversal of 70718447 is 74481707.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70718447 - 2⁶ = 70718383 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70718447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70618447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35359223 + 35359224.

It is an arithmetic number, because the mean of its divisors is an integer number (35359224).

Almost surely, 2^70718447 is an apocalyptic number.

70718447 is a deficient number, since it is larger than the sum of its proper divisors (1).

70718447 is an equidigital number, since it uses as much as digits as its factorization.

70718447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43904, while the sum is 38.

The square root of 70718447 is about 8409.4260802982. The cubic root of 70718447 is about 413.5336978767.

The spelling of 70718447 in words is "seventy million, seven hundred eighteen thousand, four hundred forty-seven".