69880087 has 4 divisors (see below), whose sum is σ = 71768776. Its totient is φ = 67991400.

The previous prime is 69880079. The next prime is 69880093. The reversal of 69880087 is 78008896.

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 69880087 - 2³ = 69880079 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 (69880007) 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 3 ways as a sum of consecutive naturals, for example, 944289 + ... + 944362.

It is an arithmetic number, because the mean of its divisors is an integer number (17942194).

Almost surely, 2^69880087 is an apocalyptic number.

69880087 is a deficient number, since it is larger than the sum of its proper divisors (1888689).

69880087 is a wasteful number, since it uses less digits than its factorization.

69880087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888688.

The product of its (nonzero) digits is 193536, while the sum is 46.

The square root of 69880087 is about 8359.4310213076. The cubic root of 69880087 is about 411.8930641971.

The spelling of 69880087 in words is "sixty-nine million, eight hundred eighty thousand, eighty-seven".