69897469 has 2 divisors, whose sum is σ = 69897470. Its totient is φ = 69897468.

The previous prime is 69897461. The next prime is 69897473. The reversal of 69897469 is 96479896.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49871844 + 20025625 = 7062^2 + 4475^2 .

It is a cyclic number.

It is not a de Polignac number, because 69897469 - 2³ = 69897461 is a prime.

It is a super-2 number, since 2×69897469² = 9771312345211922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69897461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34948734 + 34948735.

It is an arithmetic number, because the mean of its divisors is an integer number (34948735).

Almost surely, 2^69897469 is an apocalyptic number.

It is an amenable number.

69897469 is a deficient number, since it is larger than the sum of its proper divisors (1).

69897469 is an equidigital number, since it uses as much as digits as its factorization.

69897469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5878656, while the sum is 58.

The square root of 69897469 is about 8360.4706207246. The cubic root of 69897469 is about 411.9272128462.

The spelling of 69897469 in words is "sixty-nine million, eight hundred ninety-seven thousand, four hundred sixty-nine".