68451739 has 12 divisors (see below), whose sum is σ = 71500192. Its totient is φ = 65484720.

The previous prime is 68451731. The next prime is 68451781. The reversal of 68451739 is 93715486.

It is not a de Polignac number, because 68451739 - 2³ = 68451731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68451695 and 68451704.

It is not an unprimeable number, because it can be changed into a prime (68451731) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186334 + ... + 186700.

Almost surely, 2^68451739 is an apocalyptic number.

68451739 is a deficient number, since it is larger than the sum of its proper divisors (3048453).

68451739 is an equidigital number, since it uses as much as digits as its factorization.

68451739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546 (or 475 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The square root of 68451739 is about 8273.5566112767. The cubic root of 68451739 is about 409.0673605734.

The spelling of 68451739 in words is "sixty-eight million, four hundred fifty-one thousand, seven hundred thirty-nine".