70605571 has 2 divisors, whose sum is σ = 70605572. Its totient is φ = 70605570.

The previous prime is 70605559. The next prime is 70605599. The reversal of 70605571 is 17550607.

It is a weak prime.

It is an emirp because it is prime and its reverse (17550607) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70605571 - 2⁷ = 70605443 is a prime.

It is not a weakly prime, because it can be changed into another prime (70605511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35302785 + 35302786.

It is an arithmetic number, because the mean of its divisors is an integer number (35302786).

Almost surely, 2^70605571 is an apocalyptic number.

70605571 is a deficient number, since it is larger than the sum of its proper divisors (1).

70605571 is an equidigital number, since it uses as much as digits as its factorization.

70605571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 70605571 is about 8402.7121216902. The cubic root of 70605571 is about 413.3135625443.

The spelling of 70605571 in words is "seventy million, six hundred five thousand, five hundred seventy-one".