70116381 has 32 divisors (see below), whose sum is σ = 110747520. Its totient is φ = 43690752.

The previous prime is 70116379. The next prime is 70116401. The reversal of 70116381 is 18361107.

It is not a de Polignac number, because 70116381 - 2¹ = 70116379 is a prime.

It is a super-2 number, since 2×70116381² = 9832613769074322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70116301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78966 + ... + 79848.

It is an arithmetic number, because the mean of its divisors is an integer number (3460860).

Almost surely, 2^70116381 is an apocalyptic number.

It is an amenable number.

70116381 is a deficient number, since it is larger than the sum of its proper divisors (40631139).

70116381 is a wasteful number, since it uses less digits than its factorization.

70116381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082 (or 1076 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 70116381 is about 8373.5524719201. The cubic root of 70116381 is about 412.3568031884.

Adding to 70116381 its reverse (18361107), we get a palindrome (88477488).

The spelling of 70116381 in words is "seventy million, one hundred sixteen thousand, three hundred eighty-one".