70135161 has 4 divisors (see below), whose sum is σ = 93513552. Its totient is φ = 46756772.

The previous prime is 70135159. The next prime is 70135181. The reversal of 70135161 is 16153107.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 70135161 - 2¹ = 70135159 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70135111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11689191 + ... + 11689196.

It is an arithmetic number, because the mean of its divisors is an integer number (23378388).

Almost surely, 2^70135161 is an apocalyptic number.

It is an amenable number.

70135161 is a deficient number, since it is larger than the sum of its proper divisors (23378391).

70135161 is a wasteful number, since it uses less digits than its factorization.

70135161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23378390.

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 70135161 is about 8374.6737846916. The cubic root of 70135161 is about 412.3936151733.

Adding to 70135161 its reverse (16153107), we get a palindrome (86288268).

The spelling of 70135161 in words is "seventy million, one hundred thirty-five thousand, one hundred sixty-one".