70656841 has 4 divisors (see below), whose sum is σ = 70703892. Its totient is φ = 70609792.

The previous prime is 70656829. The next prime is 70656907. The reversal of 70656841 is 14865607.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9363600 + 61293241 = 3060^2 + 7829^2 .

It is a cyclic number.

It is not a de Polignac number, because 70656841 - 2⁵ = 70656809 is a prime.

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 70656841.

It is not an unprimeable number, because it can be changed into a prime (70656541) 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, 21196 + ... + 24301.

It is an arithmetic number, because the mean of its divisors is an integer number (17675973).

Almost surely, 2^70656841 is an apocalyptic number.

It is an amenable number.

70656841 is a deficient number, since it is larger than the sum of its proper divisors (47051).

70656841 is a wasteful number, since it uses less digits than its factorization.

70656841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47050.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 70656841 is about 8405.7623687563. The cubic root of 70656841 is about 413.4135804275.

The spelling of 70656841 in words is "seventy million, six hundred fifty-six thousand, eight hundred forty-one".