70687211587 has 4 divisors (see below), whose sum is σ = 70690137840. Its totient is φ = 70684285336.

The previous prime is 70687211527. The next prime is 70687211597. The reversal of 70687211587 is 78511278607.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78511278607 = 601 ⋅130634407.

It is a cyclic number.

It is not a de Polignac number, because 70687211587 - 2¹¹ = 70687209539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70687211527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1426588 + ... + 1475305.

It is an arithmetic number, because the mean of its divisors is an integer number (17672534460).

Almost surely, 2^70687211587 is an apocalyptic number.

70687211587 is a deficient number, since it is larger than the sum of its proper divisors (2926253).

70687211587 is a wasteful number, since it uses less digits than its factorization.

70687211587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2926252.

The product of its (nonzero) digits is 1317120, while the sum is 52.

The spelling of 70687211587 in words is "seventy billion, six hundred eighty-seven million, two hundred eleven thousand, five hundred eighty-seven".