69426869 has 4 divisors (see below), whose sum is σ = 70377996. Its totient is φ = 68475744.

The previous prime is 69426823. The next prime is 69426901. The reversal of 69426869 is 96862496.

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 21996100 + 47430769 = 4690^2 + 6887^2 .

It is a cyclic number.

It is not a de Polignac number, because 69426869 - 2⁸ = 69426613 is a prime.

It is a super-2 number, since 2×69426869² = 9640180278286322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69426769) 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, 475454 + ... + 475599.

It is an arithmetic number, because the mean of its divisors is an integer number (17594499).

Almost surely, 2^69426869 is an apocalyptic number.

It is an amenable number.

69426869 is a deficient number, since it is larger than the sum of its proper divisors (951127).

69426869 is an equidigital number, since it uses as much as digits as its factorization.

69426869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951126.

The product of its digits is 1119744, while the sum is 50.

The square root of 69426869 is about 8332.2787399366. The cubic root of 69426869 is about 411.0006669774. Note that the first 3 decimals are identical.

The spelling of 69426869 in words is "sixty-nine million, four hundred twenty-six thousand, eight hundred sixty-nine".