69690959 has 4 divisors (see below), whose sum is σ = 75051816. Its totient is φ = 64330104.

The previous prime is 69690893. The next prime is 69690961. The reversal of 69690959 is 95909696.

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

It is a cyclic number.

It is not a de Polignac number, because 69690959 - 2¹² = 69686863 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 69690959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69690359) 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, 2680409 + ... + 2680434.

It is an arithmetic number, because the mean of its divisors is an integer number (18762954).

Almost surely, 2^69690959 is an apocalyptic number.

69690959 is a deficient number, since it is larger than the sum of its proper divisors (5360857).

69690959 is a wasteful number, since it uses less digits than its factorization.

69690959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5360856.

The product of its (nonzero) digits is 1180980, while the sum is 53.

The square root of 69690959 is about 8348.1111037168. Note that the first 4 decimals coincide. The cubic root of 69690959 is about 411.5211370908.

The spelling of 69690959 in words is "sixty-nine million, six hundred ninety thousand, nine hundred fifty-nine".