70671943 has 2 divisors, whose sum is σ = 70671944. Its totient is φ = 70671942.

The previous prime is 70671917. The next prime is 70671983. The reversal of 70671943 is 34917607.

It is a weak prime.

It is an emirp because it is prime and its reverse (34917607) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70671943 - 2²¹ = 68574791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70671983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35335971 + 35335972.

It is an arithmetic number, because the mean of its divisors is an integer number (35335972).

Almost surely, 2^70671943 is an apocalyptic number.

70671943 is a deficient number, since it is larger than the sum of its proper divisors (1).

70671943 is an equidigital number, since it uses as much as digits as its factorization.

70671943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 70671943 is about 8406.6606330933. The cubic root of 70671943 is about 413.4430322921.

The spelling of 70671943 in words is "seventy million, six hundred seventy-one thousand, nine hundred forty-three".