68864501 has 4 divisors (see below), whose sum is σ = 72915372. Its totient is φ = 64813632.

The previous prime is 68864491. The next prime is 68864503. The reversal of 68864501 is 10546886.

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

It can be written as a sum of positive squares in 2 ways, for example, as 60855601 + 8008900 = 7801^2 + 2830^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68864501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68864503) 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, 2025410 + ... + 2025443.

It is an arithmetic number, because the mean of its divisors is an integer number (18228843).

Almost surely, 2^68864501 is an apocalyptic number.

It is an amenable number.

68864501 is a deficient number, since it is larger than the sum of its proper divisors (4050871).

68864501 is a wasteful number, since it uses less digits than its factorization.

68864501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4050870.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 68864501 is about 8298.4637734945. The cubic root of 68864501 is about 409.8879348688.

The spelling of 68864501 in words is "sixty-eight million, eight hundred sixty-four thousand, five hundred one".