70287161 has 16 divisors (see below), whose sum is σ = 84524160. Its totient is φ = 57179520.

The previous prime is 70287143. The next prime is 70287223. The reversal of 70287161 is 16178207.

It is a cyclic number.

It is not a de Polignac number, because 70287161 - 2²⁶ = 3178297 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70287961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7310 + ... + 13928.

It is an arithmetic number, because the mean of its divisors is an integer number (5282760).

Almost surely, 2^70287161 is an apocalyptic number.

It is an amenable number.

70287161 is a deficient number, since it is larger than the sum of its proper divisors (14236999).

70287161 is a wasteful number, since it uses less digits than its factorization.

70287161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6704.

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 70287161 is about 8383.7438534345. The cubic root of 70287161 is about 412.6913193935.

The spelling of 70287161 in words is "seventy million, two hundred eighty-seven thousand, one hundred sixty-one".