70843381 has 16 divisors (see below), whose sum is σ = 88934400. Its totient is φ = 55023408.

The previous prime is 70843373. The next prime is 70843397. The reversal of 70843381 is 18334807.

It is a cyclic number.

It is not a de Polignac number, because 70843381 - 2³ = 70843373 is a prime.

It is a super-2 number, since 2×70843381² = 10037569263022322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70843081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8521 + ... + 14638.

It is an arithmetic number, because the mean of its divisors is an integer number (5558400).

Almost surely, 2^70843381 is an apocalyptic number.

It is an amenable number.

70843381 is a deficient number, since it is larger than the sum of its proper divisors (18091019).

70843381 is a wasteful number, since it uses less digits than its factorization.

70843381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23208.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 70843381 is about 8416.8510144828. The cubic root of 70843381 is about 413.7770762637. Note that the first 3 decimals are identical.

The spelling of 70843381 in words is "seventy million, eight hundred forty-three thousand, three hundred eighty-one".