70112681 has 4 divisors (see below), whose sum is σ = 70131600. Its totient is φ = 70093764.

The previous prime is 70112677. The next prime is 70112683. The reversal of 70112681 is 18621107.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18621107 = 43 ⋅433049.

It is a cyclic number.

It is not a de Polignac number, because 70112681 - 2² = 70112677 is a prime.

It is a super-2 number, since 2×70112681² = 9831576074015522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70112681.

It is not an unprimeable number, because it can be changed into a prime (70112683) 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, 1871 + ... + 11988.

It is an arithmetic number, because the mean of its divisors is an integer number (17532900).

Almost surely, 2^70112681 is an apocalyptic number.

It is an amenable number.

70112681 is a deficient number, since it is larger than the sum of its proper divisors (18919).

70112681 is a wasteful number, since it uses less digits than its factorization.

70112681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18918.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 70112681 is about 8373.3315352970. The cubic root of 70112681 is about 412.3495497859.

Adding to 70112681 its reverse (18621107), we get a palindrome (88733788).

The spelling of 70112681 in words is "seventy million, one hundred twelve thousand, six hundred eighty-one".