69690539 has 2 divisors, whose sum is σ = 69690540. Its totient is φ = 69690538.

The previous prime is 69690503. The next prime is 69690553. The reversal of 69690539 is 93509696.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 69690539 - 2¹² = 69686443 is a prime.

It is a super-2 number, since 2×69690539² = 9713542452221042, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 69690493 and 69690502.

It is not a weakly prime, because it can be changed into another prime (69690739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34845269 + 34845270.

It is an arithmetic number, because the mean of its divisors is an integer number (34845270).

Almost surely, 2^69690539 is an apocalyptic number.

69690539 is a deficient number, since it is larger than the sum of its proper divisors (1).

69690539 is an equidigital number, since it uses as much as digits as its factorization.

69690539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 393660, while the sum is 47.

The square root of 69690539 is about 8348.0859482878. The cubic root of 69690539 is about 411.5203103972.

The spelling of 69690539 in words is "sixty-nine million, six hundred ninety thousand, five hundred thirty-nine".