69240865 has 8 divisors (see below), whose sum is σ = 84227688. Its totient is φ = 54633600.

The previous prime is 69240851. The next prime is 69240907. The reversal of 69240865 is 56804296.

It is a happy number.

69240865 is nontrivially palindromic in base 2.

It can be written as a sum of positive squares in 4 ways, for example, as 8025889 + 61214976 = 2833^2 + 7824^2 .

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

It is not a de Polignac number, because 69240865 - 2¹¹ = 69238817 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94486 + ... + 95215.

It is an arithmetic number, because the mean of its divisors is an integer number (10528461).

Almost surely, 2^69240865 is an apocalyptic number.

It is an amenable number.

69240865 is a deficient number, since it is larger than the sum of its proper divisors (14986823).

69240865 is a wasteful number, since it uses less digits than its factorization.

69240865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189779.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 69240865 is about 8321.1096014895. The cubic root of 69240865 is about 410.6332965233.

The spelling of 69240865 in words is "sixty-nine million, two hundred forty thousand, eight hundred sixty-five".