68248821 has 8 divisors (see below), whose sum is σ = 92280384. Its totient is φ = 44858240.

The previous prime is 68248801. The next prime is 68248823. The reversal of 68248821 is 12884286.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68248821 - 2¹³ = 68240629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68248821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68248823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159996 + ... + 160421.

It is an arithmetic number, because the mean of its divisors is an integer number (11535048).

Almost surely, 2^68248821 is an apocalyptic number.

It is an amenable number.

68248821 is a deficient number, since it is larger than the sum of its proper divisors (24031563).

68248821 is a wasteful number, since it uses less digits than its factorization.

68248821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320491.

The product of its digits is 49152, while the sum is 39.

The square root of 68248821 is about 8261.2844642949. The cubic root of 68248821 is about 408.6627480722.

The spelling of 68248821 in words is "sixty-eight million, two hundred forty-eight thousand, eight hundred twenty-one".