68408451 has 12 divisors (see below), whose sum is σ = 98883928. Its totient is φ = 45572544.

The previous prime is 68408443. The next prime is 68408467. The reversal of 68408451 is 15480486.

It is not a de Polignac number, because 68408451 - 2³ = 68408443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68408471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22731 + ... + 25563.

Almost surely, 2^68408451 is an apocalyptic number.

68408451 is a deficient number, since it is larger than the sum of its proper divisors (30475477).

68408451 is a wasteful number, since it uses less digits than its factorization.

68408451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5522 (or 5519 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 68408451 is about 8270.9401521230. The cubic root of 68408451 is about 408.9811127430.

The spelling of 68408451 in words is "sixty-eight million, four hundred eight thousand, four hundred fifty-one".