69128413 has 2 divisors, whose sum is σ = 69128414. Its totient is φ = 69128412.

The previous prime is 69128407. The next prime is 69128429. The reversal of 69128413 is 31482196.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68923204 + 205209 = 8302^2 + 453^2 .

It is a cyclic number.

It is not a de Polignac number, because 69128413 - 2⁹ = 69127901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69128113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34564206 + 34564207.

It is an arithmetic number, because the mean of its divisors is an integer number (34564207).

Almost surely, 2^69128413 is an apocalyptic number.

It is an amenable number.

69128413 is a deficient number, since it is larger than the sum of its proper divisors (1).

69128413 is an equidigital number, since it uses as much as digits as its factorization.

69128413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 34.

The square root of 69128413 is about 8314.3498242496. The cubic root of 69128413 is about 410.4108770219.

The spelling of 69128413 in words is "sixty-nine million, one hundred twenty-eight thousand, four hundred thirteen".