70163287 has 4 divisors (see below), whose sum is σ = 70182936. Its totient is φ = 70143640.

The previous prime is 70163281. The next prime is 70163299. The reversal of 70163287 is 78236107.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78236107 = 71 ⋅1101917.

It is a cyclic number.

It is not a de Polignac number, because 70163287 - 2³ = 70163279 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 (70163281) 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, 2788 + ... + 12169.

It is an arithmetic number, because the mean of its divisors is an integer number (17545734).

Almost surely, 2^70163287 is an apocalyptic number.

70163287 is a deficient number, since it is larger than the sum of its proper divisors (19649).

70163287 is a wasteful number, since it uses less digits than its factorization.

70163287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19648.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 70163287 is about 8376.3528459587. The cubic root of 70163287 is about 412.4487346146.

The spelling of 70163287 in words is "seventy million, one hundred sixty-three thousand, two hundred eighty-seven".