69793987 has 4 divisors (see below), whose sum is σ = 69978520. Its totient is φ = 69609456.

The previous prime is 69793979. The next prime is 69794033. The reversal of 69793987 is 78939796.

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 69793987 - 2³ = 69793979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69793957) 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, 91698 + ... + 92455.

It is an arithmetic number, because the mean of its divisors is an integer number (17494630).

Almost surely, 2^69793987 is an apocalyptic number.

69793987 is a deficient number, since it is larger than the sum of its proper divisors (184533).

69793987 is a wasteful number, since it uses less digits than its factorization.

69793987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184532.

The product of its digits is 5143824, while the sum is 58.

The square root of 69793987 is about 8354.2795619970. The cubic root of 69793987 is about 411.7238287276.

The spelling of 69793987 in words is "sixty-nine million, seven hundred ninety-three thousand, nine hundred eighty-seven".