70984081 has 4 divisors (see below), whose sum is σ = 81124672. Its totient is φ = 60843492.

The previous prime is 70984073. The next prime is 70984091. The reversal of 70984081 is 18048907.

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 70984081 - 2³ = 70984073 is a prime.

It is a super-2 number, since 2×70984081² = 10077479510829122, 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 70984081.

It is not an unprimeable number, because it can be changed into a prime (70984031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5070285 + ... + 5070298.

It is an arithmetic number, because the mean of its divisors is an integer number (20281168).

Almost surely, 2^70984081 is an apocalyptic number.

It is an amenable number.

70984081 is a deficient number, since it is larger than the sum of its proper divisors (10140591).

70984081 is a wasteful number, since it uses less digits than its factorization.

70984081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10140590.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 70984081 is about 8425.2051013610. The cubic root of 70984081 is about 414.0508253625.

The spelling of 70984081 in words is "seventy million, nine hundred eighty-four thousand, eighty-one".