69956641 has 4 divisors (see below), whose sum is σ = 70049812. Its totient is φ = 69863472.

The previous prime is 69956617. The next prime is 69956669. The reversal of 69956641 is 14665996.

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 37466641 + 32490000 = 6121^2 + 5700^2 .

It is a cyclic number.

It is not a de Polignac number, because 69956641 - 2⁵ = 69956609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 69956591 and 69956600.

It is not an unprimeable number, because it can be changed into a prime (69926641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45450 + ... + 46963.

It is an arithmetic number, because the mean of its divisors is an integer number (17512453).

Almost surely, 2^69956641 is an apocalyptic number.

It is an amenable number.

69956641 is a deficient number, since it is larger than the sum of its proper divisors (93171).

69956641 is an equidigital number, since it uses as much as digits as its factorization.

69956641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93170.

The product of its digits is 349920, while the sum is 46.

The square root of 69956641 is about 8364.0086680969. The cubic root of 69956641 is about 412.0434196392.

The spelling of 69956641 in words is "sixty-nine million, nine hundred fifty-six thousand, six hundred forty-one".