69097381 has 2 divisors, whose sum is σ = 69097382. Its totient is φ = 69097380.

The previous prime is 69097361. The next prime is 69097393. The reversal of 69097381 is 18379096.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66569281 + 2528100 = 8159^2 + 1590^2 .

It is a cyclic number.

It is not a de Polignac number, because 69097381 - 2⁵ = 69097349 is a prime.

It is a super-3 number, since 3×69097381³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69097321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34548690 + 34548691.

It is an arithmetic number, because the mean of its divisors is an integer number (34548691).

Almost surely, 2^69097381 is an apocalyptic number.

It is an amenable number.

69097381 is a deficient number, since it is larger than the sum of its proper divisors (1).

69097381 is an equidigital number, since it uses as much as digits as its factorization.

69097381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 69097381 is about 8312.4834435925. The cubic root of 69097381 is about 410.3494561773.

The spelling of 69097381 in words is "sixty-nine million, ninety-seven thousand, three hundred eighty-one".