68738669 has 4 divisors (see below), whose sum is σ = 68777280. Its totient is φ = 68700060.

The previous prime is 68738653. The next prime is 68738689. The reversal of 68738669 is 96683786.

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, and also an emirpimes, since its reverse is a distinct semiprime: 96683786 = 2 ⋅48341893.

It is a cyclic number.

It is not a de Polignac number, because 68738669 - 2⁴ = 68738653 is a prime.

It is a super-2 number, since 2×68738669² = 9450009231783122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 68738669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68738689) 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, 16499 + ... + 20240.

It is an arithmetic number, because the mean of its divisors is an integer number (17194320).

Almost surely, 2^68738669 is an apocalyptic number.

It is an amenable number.

68738669 is a deficient number, since it is larger than the sum of its proper divisors (38611).

68738669 is a wasteful number, since it uses less digits than its factorization.

68738669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38610.

The product of its digits is 2612736, while the sum is 53.

The square root of 68738669 is about 8290.8786627233. The cubic root of 68738669 is about 409.6381280533.

The spelling of 68738669 in words is "sixty-eight million, seven hundred thirty-eight thousand, six hundred sixty-nine".