68421827 has 4 divisors (see below), whose sum is σ = 68438376. Its totient is φ = 68405280.

The previous prime is 68421823. The next prime is 68421841. The reversal of 68421827 is 72812486.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 68421827 - 2² = 68421823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68421823) 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, 3848 + ... + 12314.

It is an arithmetic number, because the mean of its divisors is an integer number (17109594).

Almost surely, 2^68421827 is an apocalyptic number.

68421827 is a deficient number, since it is larger than the sum of its proper divisors (16549).

68421827 is an equidigital number, since it uses as much as digits as its factorization.

68421827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16548.

The product of its digits is 43008, while the sum is 38.

The square root of 68421827 is about 8271.7487268413. The cubic root of 68421827 is about 409.0077672220.

The spelling of 68421827 in words is "sixty-eight million, four hundred twenty-one thousand, eight hundred twenty-seven".