70894161 has 12 divisors (see below), whose sum is σ = 110279988. Its totient is φ = 43627104.

The previous prime is 70894157. The next prime is 70894177. The reversal of 70894161 is 16149807.

It can be written as a sum of positive squares in 2 ways, for example, as 25250625 + 45643536 = 5025^2 + 6756^2 .

It is not a de Polignac number, because 70894161 - 2² = 70894157 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (70894121) 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 11 ways as a sum of consecutive naturals, for example, 302850 + ... + 303083.

It is an arithmetic number, because the mean of its divisors is an integer number (9189999).

Almost surely, 2^70894161 is an apocalyptic number.

It is an amenable number.

70894161 is a deficient number, since it is larger than the sum of its proper divisors (39385827).

70894161 is a wasteful number, since it uses less digits than its factorization.

70894161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605952 (or 605949 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 70894161 is about 8419.8670417056. The cubic root of 70894161 is about 413.8759167450.

The spelling of 70894161 in words is "seventy million, eight hundred ninety-four thousand, one hundred sixty-one".