69985087 has 4 divisors (see below), whose sum is σ = 70135416. Its totient is φ = 69834760.

The previous prime is 69985079. The next prime is 69985099. The reversal of 69985087 is 78058996.

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

It is a cyclic number.

It is not a de Polignac number, because 69985087 - 2³ = 69985079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69985007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74464 + ... + 75397.

It is an arithmetic number, because the mean of its divisors is an integer number (17533854).

Almost surely, 2^69985087 is an apocalyptic number.

69985087 is a deficient number, since it is larger than the sum of its proper divisors (150329).

69985087 is a wasteful number, since it uses less digits than its factorization.

69985087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150328.

The product of its (nonzero) digits is 1088640, while the sum is 52.

The square root of 69985087 is about 8365.7089956560. The cubic root of 69985087 is about 412.0992608891.

The spelling of 69985087 in words is "sixty-nine million, nine hundred eighty-five thousand, eighty-seven".