68550689 has 4 divisors (see below), whose sum is σ = 72158640. Its totient is φ = 64942740.

The previous prime is 68550683. The next prime is 68550701. The reversal of 68550689 is 98605586.

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 a cyclic number.

It is not a de Polignac number, because 68550689 - 2²⁴ = 51773473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68550683) 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, 1803947 + ... + 1803984.

It is an arithmetic number, because the mean of its divisors is an integer number (18039660).

Almost surely, 2^68550689 is an apocalyptic number.

It is an amenable number.

68550689 is a deficient number, since it is larger than the sum of its proper divisors (3607951).

68550689 is a wasteful number, since it uses less digits than its factorization.

68550689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3607950.

The product of its (nonzero) digits is 518400, while the sum is 47.

The square root of 68550689 is about 8279.5343468096. The cubic root of 68550689 is about 409.2643739617.

The spelling of 68550689 in words is "sixty-eight million, five hundred fifty thousand, six hundred eighty-nine".