70472971 has 2 divisors, whose sum is σ = 70472972. Its totient is φ = 70472970.

The previous prime is 70472953. The next prime is 70473023. The reversal of 70472971 is 17927407.

It is a weak prime.

It is an emirp because it is prime and its reverse (17927407) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70472971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70472971.

It is not a weakly prime, because it can be changed into another prime (70472921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35236485 + 35236486.

It is an arithmetic number, because the mean of its divisors is an integer number (35236486).

Almost surely, 2^70472971 is an apocalyptic number.

70472971 is a deficient number, since it is larger than the sum of its proper divisors (1).

70472971 is an equidigital number, since it uses as much as digits as its factorization.

70472971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24696, while the sum is 37.

The square root of 70472971 is about 8394.8181040449. The cubic root of 70472971 is about 413.0546607687.

The spelling of 70472971 in words is "seventy million, four hundred seventy-two thousand, nine hundred seventy-one".