68504345 has 16 divisors (see below), whose sum is σ = 101176320. Its totient is φ = 43360704.

The previous prime is 68504341. The next prime is 68504363. The reversal of 68504345 is 54340586.

It is a cyclic number.

It is not a de Polignac number, because 68504345 - 2² = 68504341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68504341) 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 15 ways as a sum of consecutive naturals, for example, 74825 + ... + 75734.

It is an arithmetic number, because the mean of its divisors is an integer number (6323520).

Almost surely, 2^68504345 is an apocalyptic number.

68504345 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68504345 is a deficient number, since it is larger than the sum of its proper divisors (32671975).

68504345 is a wasteful number, since it uses less digits than its factorization.

68504345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150584.

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 68504345 is about 8276.7351655106. The cubic root of 68504345 is about 409.1721248331.

The spelling of 68504345 in words is "sixty-eight million, five hundred four thousand, three hundred forty-five".