68451504 has 40 divisors (see below), whose sum is σ = 192910272. Its totient is φ = 20742720.

The previous prime is 68451499. The next prime is 68451521. The reversal of 68451504 is 40515486.

It is a Harshad number since it is a multiple of its sum of digits (33).

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 7 ways as a sum of consecutive naturals, for example, 64294 + ... + 65349.

Almost surely, 2^68451504 is an apocalyptic number.

It is an amenable number.

68451504 is an abundant number, since it is smaller than the sum of its proper divisors (124458768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68451504 is a wasteful number, since it uses less digits than its factorization.

68451504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129665 (or 129659 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 68451504 is about 8273.5424093915. The cubic root of 68451504 is about 409.0668924531.

The spelling of 68451504 in words is "sixty-eight million, four hundred fifty-one thousand, five hundred four".