70471957 has 2 divisors, whose sum is σ = 70471958. Its totient is φ = 70471956.

The previous prime is 70471903. The next prime is 70471979. The reversal of 70471957 is 75917407.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69872881 + 599076 = 8359^2 + 774^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70471957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70471657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35235978 + 35235979.

It is an arithmetic number, because the mean of its divisors is an integer number (35235979).

Almost surely, 2^70471957 is an apocalyptic number.

It is an amenable number.

70471957 is a deficient number, since it is larger than the sum of its proper divisors (1).

70471957 is an equidigital number, since it uses as much as digits as its factorization.

70471957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61740, while the sum is 40.

The square root of 70471957 is about 8394.7577094279. The cubic root of 70471957 is about 413.0526796808.

The spelling of 70471957 in words is "seventy million, four hundred seventy-one thousand, nine hundred fifty-seven".