70887697 has 8 divisors (see below), whose sum is σ = 71788136. Its totient is φ = 69990912.

The previous prime is 70887667. The next prime is 70887737. The reversal of 70887697 is 79678807.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 42627841 + 28259856 = 6529^2 + 5316^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70887697 - 2¹¹ = 70885649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70887667) 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 7 ways as a sum of consecutive naturals, for example, 70603 + ... + 71599.

It is an arithmetic number, because the mean of its divisors is an integer number (8973517).

Almost surely, 2^70887697 is an apocalyptic number.

It is an amenable number.

70887697 is a deficient number, since it is larger than the sum of its proper divisors (900439).

70887697 is an equidigital number, since it uses as much as digits as its factorization.

70887697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827.

The product of its (nonzero) digits is 1185408, while the sum is 52.

The square root of 70887697 is about 8419.4831789131. The cubic root of 70887697 is about 413.8633375462.

The spelling of 70887697 in words is "seventy million, eight hundred eighty-seven thousand, six hundred ninety-seven".