69071381 has 2 divisors, whose sum is σ = 69071382. Its totient is φ = 69071380.

The previous prime is 69071377. The next prime is 69071383. The reversal of 69071381 is 18317096.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43112356 + 25959025 = 6566^2 + 5095^2 .

It is a cyclic number.

It is not a de Polignac number, because 69071381 - 2² = 69071377 is a prime.

It is a super-2 number, since 2×69071381² = 9541711346494322, which contains 22 as substring.

Together with 69071383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69071383) 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, 34535690 + 34535691.

It is an arithmetic number, because the mean of its divisors is an integer number (34535691).

Almost surely, 2^69071381 is an apocalyptic number.

It is an amenable number.

69071381 is a deficient number, since it is larger than the sum of its proper divisors (1).

69071381 is an equidigital number, since it uses as much as digits as its factorization.

69071381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 69071381 is about 8310.9193835580. The cubic root of 69071381 is about 410.2979808817.

The spelling of 69071381 in words is "sixty-nine million, seventy-one thousand, three hundred eighty-one".