70216243 has 4 divisors (see below), whose sum is σ = 70326088. Its totient is φ = 70106400.

The previous prime is 70216207. The next prime is 70216249. The reversal of 70216243 is 34261207.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70216243 - 2⁹ = 70215731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70216249) 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, 53958 + ... + 55243.

It is an arithmetic number, because the mean of its divisors is an integer number (17581522).

Almost surely, 2^70216243 is an apocalyptic number.

70216243 is a deficient number, since it is larger than the sum of its proper divisors (109845).

70216243 is a wasteful number, since it uses less digits than its factorization.

70216243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109844.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 70216243 is about 8379.5132913553. The cubic root of 70216243 is about 412.5524742550.

The spelling of 70216243 in words is "seventy million, two hundred sixteen thousand, two hundred forty-three".