69040256 has 32 divisors (see below), whose sum is σ = 137933580. Its totient is φ = 34421760.

The previous prime is 69040253. The next prime is 69040259. The reversal of 69040256 is 65204096.

It is an interprime number because it is at equal distance from previous prime (69040253) and next prime (69040259).

It can be written as a sum of positive squares in 2 ways, for example, as 67502656 + 1537600 = 8216^2 + 1240^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (69040253) 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, 68750 + ... + 69746.

Almost surely, 2^69040256 is an apocalyptic number.

It is an amenable number.

69040256 is a deficient number, since it is larger than the sum of its proper divisors (68893324).

69040256 is an equidigital number, since it uses as much as digits as its factorization.

69040256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552 (or 1540 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 69040256 is about 8309.0466360468. The cubic root of 69040256 is about 410.2363420226.

It can be divided in two parts, 69040 and 256, that added together give a palindrome (69296).

The spelling of 69040256 in words is "sixty-nine million, forty thousand, two hundred fifty-six".