70707161 has 4 divisors (see below), whose sum is σ = 80808192. Its totient is φ = 60606132.

The previous prime is 70707157. The next prime is 70707181. The reversal of 70707161 is 16170707.

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 70707161 - 2² = 70707157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70707181) 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, 5050505 + ... + 5050518.

It is an arithmetic number, because the mean of its divisors is an integer number (20202048).

Almost surely, 2^70707161 is an apocalyptic number.

It is an amenable number.

70707161 is a deficient number, since it is larger than the sum of its proper divisors (10101031).

70707161 is a wasteful number, since it uses less digits than its factorization.

70707161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10101030.

The product of its (nonzero) digits is 2058, while the sum is 29.

The square root of 70707161 is about 8408.7550208102. The cubic root of 70707161 is about 413.5116980081.

Adding to 70707161 its reverse (16170707), we get a palindrome (86877868).

The spelling of 70707161 in words is "seventy million, seven hundred seven thousand, one hundred sixty-one".