70545947 has 2 divisors, whose sum is σ = 70545948. Its totient is φ = 70545946.

The previous prime is 70545931. The next prime is 70545949. The reversal of 70545947 is 74954507.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70545947 - 2⁴ = 70545931 is a prime.

Together with 70545949, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70545949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35272973 + 35272974.

It is an arithmetic number, because the mean of its divisors is an integer number (35272974).

Almost surely, 2^70545947 is an apocalyptic number.

70545947 is a deficient number, since it is larger than the sum of its proper divisors (1).

70545947 is an equidigital number, since it uses as much as digits as its factorization.

70545947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 70545947 is about 8399.1634702511. The cubic root of 70545947 is about 413.1971867041.

The spelling of 70545947 in words is "seventy million, five hundred forty-five thousand, nine hundred forty-seven".