69899285 has 4 divisors (see below), whose sum is σ = 83879148. Its totient is φ = 55919424.

The previous prime is 69899281. The next prime is 69899303. The reversal of 69899285 is 58299896.

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 39450961 + 30448324 = 6281^2 + 5518^2 .

It is a cyclic number.

It is not a de Polignac number, because 69899285 - 2² = 69899281 is a prime.

It is a super-2 number, since 2×69899285² = 9771820087022450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 69899285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69899281) 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, 6989924 + ... + 6989933.

It is an arithmetic number, because the mean of its divisors is an integer number (20969787).

Almost surely, 2^69899285 is an apocalyptic number.

It is an amenable number.

69899285 is a deficient number, since it is larger than the sum of its proper divisors (13979863).

69899285 is a wasteful number, since it uses less digits than its factorization.

69899285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13979862.

The product of its digits is 2799360, while the sum is 56.

The square root of 69899285 is about 8360.5792263455. The cubic root of 69899285 is about 411.9307802302.

The spelling of 69899285 in words is "sixty-nine million, eight hundred ninety-nine thousand, two hundred eighty-five".