68477805 has 80 divisors (see below), whose sum is σ = 141134400. Its totient is φ = 31415040.

The previous prime is 68477797. The next prime is 68477809. The reversal of 68477805 is 50877486.

It is not a de Polignac number, because 68477805 - 2³ = 68477797 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68477809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 84241 + ... + 85049.

It is an arithmetic number, because the mean of its divisors is an integer number (1764180).

Almost surely, 2^68477805 is an apocalyptic number.

It is an amenable number.

68477805 is an abundant number, since it is smaller than the sum of its proper divisors (72656595).

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

68477805 is a wasteful number, since it uses less digits than its factorization.

68477805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856 (or 847 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 68477805 is about 8275.1317210060. The cubic root of 68477805 is about 409.1192774267.

The spelling of 68477805 in words is "sixty-eight million, four hundred seventy-seven thousand, eight hundred five".