70981339 has 16 divisors (see below), whose sum is σ = 84188160. Its totient is φ = 58995360.

The previous prime is 70981319. The next prime is 70981343. The reversal of 70981339 is 93318907.

It is a cyclic number.

It is not a de Polignac number, because 70981339 - 2¹⁵ = 70948571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70981319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12982 + ... + 17620.

It is an arithmetic number, because the mean of its divisors is an integer number (5261760).

Almost surely, 2^70981339 is an apocalyptic number.

70981339 is a deficient number, since it is larger than the sum of its proper divisors (13206821).

70981339 is a wasteful number, since it uses less digits than its factorization.

70981339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4770.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 70981339 is about 8425.0423737807. The cubic root of 70981339 is about 414.0454939231.

The spelling of 70981339 in words is "seventy million, nine hundred eighty-one thousand, three hundred thirty-nine".