68451775 has 72 divisors (see below), whose sum is σ = 110684880. Its totient is φ = 41610240.

The previous prime is 68451731. The next prime is 68451781. The reversal of 68451775 is 57715486.

It is not a de Polignac number, because 68451775 - 2²¹ = 66354623 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 395589 + ... + 395761.

It is an arithmetic number, because the mean of its divisors is an integer number (1537290).

Almost surely, 2^68451775 is an apocalyptic number.

68451775 is a deficient number, since it is larger than the sum of its proper divisors (42233105).

68451775 is a wasteful number, since it uses less digits than its factorization.

68451775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233 (or 221 counting only the distinct ones).

The product of its digits is 235200, while the sum is 43.

The square root of 68451775 is about 8273.5587868825. The cubic root of 68451775 is about 409.0674322854.

The spelling of 68451775 in words is "sixty-eight million, four hundred fifty-one thousand, seven hundred seventy-five".