70982881 has 4 divisors (see below), whose sum is σ = 71000064. Its totient is φ = 70965700.

The previous prime is 70982869. The next prime is 70982887. The reversal of 70982881 is 18828907.

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 not a de Polignac number, because 70982881 - 2⁷ = 70982753 is a prime.

It is a super-2 number, since 2×70982881² = 10077138790120322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70982887) 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 3 ways as a sum of consecutive naturals, for example, 1776 + ... + 12046.

It is an arithmetic number, because the mean of its divisors is an integer number (17750016).

Almost surely, 2^70982881 is an apocalyptic number.

It is an amenable number.

70982881 is a deficient number, since it is larger than the sum of its proper divisors (17183).

70982881 is a wasteful number, since it uses less digits than its factorization.

70982881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17182.

The product of its (nonzero) digits is 64512, while the sum is 43.

The square root of 70982881 is about 8425.1338861765. The cubic root of 70982881 is about 414.0484921456.

The spelling of 70982881 in words is "seventy million, nine hundred eighty-two thousand, eight hundred eighty-one".