68364405 has 24 divisors (see below), whose sum is σ = 122889312. Its totient is φ = 36460368.

The previous prime is 68364389. The next prime is 68364407. The reversal of 68364405 is 50446386.

68364405 is a `hidden beast` number, since 6 + 8 + 3 + 644 + 0 + 5 = 666.

It is not a de Polignac number, because 68364405 - 2⁴ = 68364389 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 68364405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68364407) 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 23 ways as a sum of consecutive naturals, for example, 26919 + ... + 29348.

It is an arithmetic number, because the mean of its divisors is an integer number (5120388).

Almost surely, 2^68364405 is an apocalyptic number.

It is an amenable number.

68364405 is a deficient number, since it is larger than the sum of its proper divisors (54524907).

68364405 is an equidigital number, since it uses as much as digits as its factorization.

68364405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56287 (or 56275 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 68364405 is about 8268.2770272893. The cubic root of 68364405 is about 408.8933173054.

The spelling of 68364405 in words is "sixty-eight million, three hundred sixty-four thousand, four hundred five".