68305501 has 4 divisors (see below), whose sum is σ = 74515104. Its totient is φ = 62095900.

The previous prime is 68305477. The next prime is 68305511. The reversal of 68305501 is 10550386.

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 68305501 - 2⁷ = 68305373 is a prime.

It is a super-2 number, since 2×68305501² = 9331282933722002, which contains 22 as substring.

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 68305501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68305511) 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, 3104785 + ... + 3104806.

It is an arithmetic number, because the mean of its divisors is an integer number (18628776).

Almost surely, 2^68305501 is an apocalyptic number.

It is an amenable number.

68305501 is a deficient number, since it is larger than the sum of its proper divisors (6209603).

68305501 is a wasteful number, since it uses less digits than its factorization.

68305501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6209602.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 68305501 is about 8264.7142116349. The cubic root of 68305501 is about 408.7758469504.

Adding to 68305501 its reverse (10550386), we get a palindrome (78855887).

The spelling of 68305501 in words is "sixty-eight million, three hundred five thousand, five hundred one".