70081641 has 24 divisors (see below), whose sum is σ = 115914240. Its totient is φ = 39969216.

The previous prime is 70081601. The next prime is 70081651. The reversal of 70081641 is 14618007.

It is a happy number.

It is not a de Polignac number, because 70081641 - 2⁷ = 70081513 is a prime.

It is a super-2 number, since 2×70081641² = 9822872810505762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70081601) 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 23 ways as a sum of consecutive naturals, for example, 53725 + ... + 55013.

It is an arithmetic number, because the mean of its divisors is an integer number (4829760).

Almost surely, 2^70081641 is an apocalyptic number.

It is an amenable number.

70081641 is a deficient number, since it is larger than the sum of its proper divisors (45832599).

70081641 is a wasteful number, since it uses less digits than its factorization.

70081641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2165 (or 2162 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 70081641 is about 8371.4778265250. The cubic root of 70081641 is about 412.2886895671.

Adding to 70081641 its reverse (14618007), we get a palindrome (84699648).

It can be divided in two parts, 7008 and 1641, that added together give a square (8649 = 93²).

The spelling of 70081641 in words is "seventy million, eighty-one thousand, six hundred forty-one".