69989653 has 2 divisors, whose sum is σ = 69989654. Its totient is φ = 69989652.

The previous prime is 69989651. The next prime is 69989657. The reversal of 69989653 is 35698996.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69588964 + 400689 = 8342^2 + 633^2 .

It is a cyclic number.

It is not a de Polignac number, because 69989653 - 2¹ = 69989651 is a prime.

Together with 69989651, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 69989594 and 69989603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69989651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34994826 + 34994827.

It is an arithmetic number, because the mean of its divisors is an integer number (34994827).

Almost surely, 2^69989653 is an apocalyptic number.

It is an amenable number.

69989653 is a deficient number, since it is larger than the sum of its proper divisors (1).

69989653 is an equidigital number, since it uses as much as digits as its factorization.

69989653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3149280, while the sum is 55.

The square root of 69989653 is about 8365.9818909677. The cubic root of 69989653 is about 412.1082228188.

The spelling of 69989653 in words is "sixty-nine million, nine hundred eighty-nine thousand, six hundred fifty-three".