68745487 has 8 divisors (see below), whose sum is σ = 70089840. Its totient is φ = 67412160.

The previous prime is 68745463. The next prime is 68745493. The reversal of 68745487 is 78454786.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68745487 - 2⁷ = 68745359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68745487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68745427) 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 7 ways as a sum of consecutive naturals, for example, 10437 + ... + 15697.

It is an arithmetic number, because the mean of its divisors is an integer number (8761230).

Almost surely, 2^68745487 is an apocalyptic number.

68745487 is a deficient number, since it is larger than the sum of its proper divisors (1344353).

68745487 is a wasteful number, since it uses less digits than its factorization.

68745487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5513.

The product of its digits is 1505280, while the sum is 49.

The square root of 68745487 is about 8291.2898272826. The cubic root of 68745487 is about 409.6516712329.

The spelling of 68745487 in words is "sixty-eight million, seven hundred forty-five thousand, four hundred eighty-seven".