70445563 has 2 divisors, whose sum is σ = 70445564. Its totient is φ = 70445562.

The previous prime is 70445539. The next prime is 70445623. The reversal of 70445563 is 36554407.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (36554407) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70445563 is a prime.

It is not a weakly prime, because it can be changed into another prime (70442563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35222781 + 35222782.

It is an arithmetic number, because the mean of its divisors is an integer number (35222782).

Almost surely, 2^70445563 is an apocalyptic number.

70445563 is a deficient number, since it is larger than the sum of its proper divisors (1).

70445563 is an equidigital number, since it uses as much as digits as its factorization.

70445563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 34.

The square root of 70445563 is about 8393.1855096858. The cubic root of 70445563 is about 413.0011060988.

The spelling of 70445563 in words is "seventy million, four hundred forty-five thousand, five hundred sixty-three".