70826081 has 4 divisors (see below), whose sum is σ = 70843332. Its totient is φ = 70808832.

The previous prime is 70826071. The next prime is 70826083. The reversal of 70826081 is 18062807.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18062807 = 7 ⋅2580401.

It can be written as a sum of positive squares in 2 ways, for example, as 10995856 + 59830225 = 3316^2 + 7735^2 .

It is a cyclic number.

It is not a de Polignac number, because 70826081 - 2⁶ = 70826017 is a prime.

It is a super-2 number, since 2×70826081² = 10032667499637122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70826083) 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, 1481 + ... + 11993.

It is an arithmetic number, because the mean of its divisors is an integer number (17710833).

Almost surely, 2^70826081 is an apocalyptic number.

It is an amenable number.

70826081 is a deficient number, since it is larger than the sum of its proper divisors (17251).

70826081 is a wasteful number, since it uses less digits than its factorization.

70826081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17250.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 70826081 is about 8415.8232514710. The cubic root of 70826081 is about 413.7433919774.

Adding to 70826081 its reverse (18062807), we get a palindrome (88888888).

The spelling of 70826081 in words is "seventy million, eight hundred twenty-six thousand, eighty-one".