69144285 has 32 divisors (see below), whose sum is σ = 129134592. Its totient is φ = 30934080.

The previous prime is 69144269. The next prime is 69144329. The reversal of 69144285 is 58244196.

It is not a de Polignac number, because 69144285 - 2⁴ = 69144269 is a prime.

It is a super-2 number, since 2×69144285² = 9561864296322450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2071 + ... + 11940.

It is an arithmetic number, because the mean of its divisors is an integer number (4035456).

Almost surely, 2^69144285 is an apocalyptic number.

It is an amenable number.

69144285 is a deficient number, since it is larger than the sum of its proper divisors (59990307).

69144285 is a wasteful number, since it uses less digits than its factorization.

69144285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14073.

The product of its digits is 69120, while the sum is 39.

The square root of 69144285 is about 8315.3042638258. The cubic root of 69144285 is about 410.4422849610.

The spelling of 69144285 in words is "sixty-nine million, one hundred forty-four thousand, two hundred eighty-five".