70887529 has 2 divisors, whose sum is σ = 70887530. Its totient is φ = 70887528.

The previous prime is 70887527. The next prime is 70887601. The reversal of 70887529 is 92578807.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62173225 + 8714304 = 7885^2 + 2952^2 .

It is an emirp because it is prime and its reverse (92578807) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70887529 - 2¹ = 70887527 is a prime.

Together with 70887527, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (70887527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35443764 + 35443765.

It is an arithmetic number, because the mean of its divisors is an integer number (35443765).

Almost surely, 2^70887529 is an apocalyptic number.

It is an amenable number.

70887529 is a deficient number, since it is larger than the sum of its proper divisors (1).

70887529 is an equidigital number, since it uses as much as digits as its factorization.

70887529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240, while the sum is 46.

The square root of 70887529 is about 8419.4732020477. The cubic root of 70887529 is about 413.8630106013.

The spelling of 70887529 in words is "seventy million, eight hundred eighty-seven thousand, five hundred twenty-nine".