67719345 has 16 divisors (see below), whose sum is σ = 111846912. Its totient is φ = 34951680.

The previous prime is 67719343. The next prime is 67719349. The reversal of 67719345 is 54391776.

It is not a de Polignac number, because 67719345 - 2¹ = 67719343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67719297 and 67719306.

It is not an unprimeable number, because it can be changed into a prime (67719343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72352 + ... + 73281.

It is an arithmetic number, because the mean of its divisors is an integer number (6990432).

Almost surely, 2^67719345 is an apocalyptic number.

It is an amenable number.

67719345 is a deficient number, since it is larger than the sum of its proper divisors (44127567).

67719345 is a wasteful number, since it uses less digits than its factorization.

67719345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145672.

The product of its digits is 158760, while the sum is 42.

The square root of 67719345 is about 8229.1764472516. The cubic root of 67719345 is about 407.6031981722.

The spelling of 67719345 in words is "sixty-seven million, seven hundred nineteen thousand, three hundred forty-five".