69746021 has 2 divisors, whose sum is σ = 69746022. Its totient is φ = 69746020.

The previous prime is 69746011. The next prime is 69746041. The reversal of 69746021 is 12064796.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42393121 + 27352900 = 6511^2 + 5230^2 .

It is a cyclic number.

It is not a de Polignac number, because 69746021 - 2¹⁴ = 69729637 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69746011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34873010 + 34873011.

It is an arithmetic number, because the mean of its divisors is an integer number (34873011).

Almost surely, 2^69746021 is an apocalyptic number.

It is an amenable number.

69746021 is a deficient number, since it is larger than the sum of its proper divisors (1).

69746021 is an equidigital number, since it uses as much as digits as its factorization.

69746021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 69746021 is about 8351.4083243487. The cubic root of 69746021 is about 411.6294878832.

The spelling of 69746021 in words is "sixty-nine million, seven hundred forty-six thousand, twenty-one".