68451356 has 12 divisors (see below), whose sum is σ = 122575992. Its totient is φ = 33429648.

The previous prime is 68451337. The next prime is 68451373. The reversal of 68451356 is 65315486.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 198815 + ... + 199158.

It is an arithmetic number, because the mean of its divisors is an integer number (10214666).

Almost surely, 2^68451356 is an apocalyptic number.

It is an amenable number.

68451356 is a deficient number, since it is larger than the sum of its proper divisors (54124636).

68451356 is a wasteful number, since it uses less digits than its factorization.

68451356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398020 (or 398018 counting only the distinct ones).

The product of its digits is 86400, while the sum is 38.

The square root of 68451356 is about 8273.5334652130. The cubic root of 68451356 is about 409.0665976364.

The spelling of 68451356 in words is "sixty-eight million, four hundred fifty-one thousand, three hundred fifty-six".