69536813 has 4 divisors (see below), whose sum is σ = 71779968. Its totient is φ = 67293660.

The previous prime is 69536791. The next prime is 69536833. The reversal of 69536813 is 31863596.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 69536813 - 2¹² = 69532717 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 (69536833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1121531 + ... + 1121592.

It is an arithmetic number, because the mean of its divisors is an integer number (17944992).

Almost surely, 2^69536813 is an apocalyptic number.

It is an amenable number.

69536813 is a deficient number, since it is larger than the sum of its proper divisors (2243155).

69536813 is a wasteful number, since it uses less digits than its factorization.

69536813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2243154.

The product of its digits is 116640, while the sum is 41.

The square root of 69536813 is about 8338.8736049901. The cubic root of 69536813 is about 411.2175053393.

The spelling of 69536813 in words is "sixty-nine million, five hundred thirty-six thousand, eight hundred thirteen".