69287641 has 8 divisors (see below), whose sum is σ = 71912520. Its totient is φ = 66678528.

The previous prime is 69287639. The next prime is 69287651. The reversal of 69287641 is 14678296.

It can be written as a sum of positive squares in 4 ways, for example, as 646416 + 68641225 = 804^2 + 8285^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 69287641 - 2¹ = 69287639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69287611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5425 + ... + 12961.

It is an arithmetic number, because the mean of its divisors is an integer number (8989065).

Almost surely, 2^69287641 is an apocalyptic number.

It is an amenable number.

69287641 is a deficient number, since it is larger than the sum of its proper divisors (2624879).

69287641 is a wasteful number, since it uses less digits than its factorization.

69287641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7883.

The product of its digits is 145152, while the sum is 43.

The square root of 69287641 is about 8323.9198098011. The cubic root of 69287641 is about 410.7257441426.

The spelling of 69287641 in words is "sixty-nine million, two hundred eighty-seven thousand, six hundred forty-one".