69402161 has 2 divisors, whose sum is σ = 69402162. Its totient is φ = 69402160.

The previous prime is 69402139. The next prime is 69402169. The reversal of 69402161 is 16120496.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47872561 + 21529600 = 6919^2 + 4640^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69402161 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (69402169) 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, 34701080 + 34701081.

It is an arithmetic number, because the mean of its divisors is an integer number (34701081).

Almost surely, 2^69402161 is an apocalyptic number.

It is an amenable number.

69402161 is a deficient number, since it is larger than the sum of its proper divisors (1).

69402161 is an equidigital number, since it uses as much as digits as its factorization.

69402161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 69402161 is about 8330.7959403649. The cubic root of 69402161 is about 410.9519048313.

The spelling of 69402161 in words is "sixty-nine million, four hundred two thousand, one hundred sixty-one".