69691361 has 8 divisors (see below), whose sum is σ = 70635240. Its totient is φ = 68751232.

The previous prime is 69691327. The next prime is 69691367. The reversal of 69691361 is 16319696.

It can be written as a sum of positive squares in 4 ways, for example, as 11015761 + 58675600 = 3319^2 + 7660^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 69691361 - 2²² = 65497057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (69691367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68291 + ... + 69303.

It is an arithmetic number, because the mean of its divisors is an integer number (8829405).

Almost surely, 2^69691361 is an apocalyptic number.

It is an amenable number.

69691361 is a deficient number, since it is larger than the sum of its proper divisors (943879).

69691361 is a wasteful number, since it uses less digits than its factorization.

69691361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875.

The product of its digits is 52488, while the sum is 41.

The square root of 69691361 is about 8348.1351809850. The cubic root of 69691361 is about 411.5219283517.

The spelling of 69691361 in words is "sixty-nine million, six hundred ninety-one thousand, three hundred sixty-one".