70129747 has 2 divisors, whose sum is σ = 70129748. Its totient is φ = 70129746.

The previous prime is 70129733. The next prime is 70129751. The reversal of 70129747 is 74792107.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70129747 - 2¹¹ = 70127699 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70129727) 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, 35064873 + 35064874.

It is an arithmetic number, because the mean of its divisors is an integer number (35064874).

Almost surely, 2^70129747 is an apocalyptic number.

70129747 is a deficient number, since it is larger than the sum of its proper divisors (1).

70129747 is an equidigital number, since it uses as much as digits as its factorization.

70129747 is an odious number, because the sum of its binary digits is odd.

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

The square root of 70129747 is about 8374.3505419823. The cubic root of 70129747 is about 412.3830034894.

It can be divided in two parts, 70129 and 747, that added together give a triangular number (70876 = T₃₇₆).

The spelling of 70129747 in words is "seventy million, one hundred twenty-nine thousand, seven hundred forty-seven".