68021434 has 8 divisors (see below), whose sum is σ = 109880820. Its totient is φ = 31394496.

The previous prime is 68021417. The next prime is 68021441. The reversal of 68021434 is 43412086.

It can be written as a sum of positive squares in 2 ways, for example, as 66471409 + 1550025 = 8153^2 + 1245^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1308079 + ... + 1308130.

Almost surely, 2^68021434 is an apocalyptic number.

68021434 is a deficient number, since it is larger than the sum of its proper divisors (41859386).

68021434 is a wasteful number, since it uses less digits than its factorization.

68021434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2616224.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 68021434 is about 8247.5107759857. The cubic root of 68021434 is about 408.2083910765.

The spelling of 68021434 in words is "sixty-eight million, twenty-one thousand, four hundred thirty-four".