68836669 has 4 divisors (see below), whose sum is σ = 75094560. Its totient is φ = 62578780.

The previous prime is 68836643. The next prime is 68836673. The reversal of 68836669 is 96663886.

It is a happy number.

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 not a de Polignac number, because 68836669 - 2²⁵ = 35282237 is a prime.

It is a super-3 number, since 3×68836669³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68836699) 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, 3128929 + ... + 3128950.

It is an arithmetic number, because the mean of its divisors is an integer number (18773640).

Almost surely, 2^68836669 is an apocalyptic number.

It is an amenable number.

68836669 is a deficient number, since it is larger than the sum of its proper divisors (6257891).

68836669 is a wasteful number, since it uses less digits than its factorization.

68836669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6257890.

The product of its digits is 2239488, while the sum is 52.

The square root of 68836669 is about 8296.7866671381. The cubic root of 68836669 is about 409.8327078745.

The spelling of 68836669 in words is "sixty-eight million, eight hundred thirty-six thousand, six hundred sixty-nine".