69385385 has 4 divisors (see below), whose sum is σ = 83262468. Its totient is φ = 55508304.

The previous prime is 69385343. The next prime is 69385417. The reversal of 69385385 is 58358396.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10156969 + 59228416 = 3187^2 + 7696^2 .

It is a cyclic number.

It is not a de Polignac number, because 69385385 - 2¹⁶ = 69319849 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6938534 + ... + 6938543.

It is an arithmetic number, because the mean of its divisors is an integer number (20815617).

Almost surely, 2^69385385 is an apocalyptic number.

It is an amenable number.

69385385 is a deficient number, since it is larger than the sum of its proper divisors (13877083).

69385385 is a wasteful number, since it uses less digits than its factorization.

69385385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13877082.

The product of its digits is 777600, while the sum is 47.

The square root of 69385385 is about 8329.7890129342. The cubic root of 69385385 is about 410.9187901817.

The spelling of 69385385 in words is "sixty-nine million, three hundred eighty-five thousand, three hundred eighty-five".