69657397 has 4 divisors (see below), whose sum is σ = 69823276. Its totient is φ = 69491520.

The previous prime is 69657389. The next prime is 69657407. The reversal of 69657397 is 79375696.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 285156 + 69372241 = 534^2 + 8329^2 .

It is a cyclic number.

It is not a de Polignac number, because 69657397 - 2³ = 69657389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69657197) 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 in 3 ways as a sum of consecutive naturals, for example, 82308 + ... + 83149.

It is an arithmetic number, because the mean of its divisors is an integer number (17455819).

Almost surely, 2^69657397 is an apocalyptic number.

It is an amenable number.

69657397 is a deficient number, since it is larger than the sum of its proper divisors (165879).

69657397 is a wasteful number, since it uses less digits than its factorization.

69657397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165878.

The product of its digits is 2143260, while the sum is 52.

The square root of 69657397 is about 8346.1007063179. The cubic root of 69657397 is about 411.4550659183.

The spelling of 69657397 in words is "sixty-nine million, six hundred fifty-seven thousand, three hundred ninety-seven".