70217141 has 4 divisors (see below), whose sum is σ = 73912800. Its totient is φ = 66521484.

The previous prime is 70217117. The next prime is 70217143. The reversal of 70217141 is 14171207.

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 a de Polignac number, because none of the positive numbers 2^k-70217141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70217143) 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, 1847801 + ... + 1847838.

It is an arithmetic number, because the mean of its divisors is an integer number (18478200).

Almost surely, 2^70217141 is an apocalyptic number.

It is an amenable number.

70217141 is a deficient number, since it is larger than the sum of its proper divisors (3695659).

70217141 is a wasteful number, since it uses less digits than its factorization.

70217141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3695658.

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 70217141 is about 8379.5668742483. The cubic root of 70217141 is about 412.5542329674.

Adding to 70217141 its reverse (14171207), we get a palindrome (84388348).

The spelling of 70217141 in words is "seventy million, two hundred seventeen thousand, one hundred forty-one".