67416689 has 8 divisors (see below), whose sum is σ = 69157800. Its totient is φ = 65693056.

The previous prime is 67416653. The next prime is 67416709. The reversal of 67416689 is 98661476.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15936064 + 51480625 = 3992^2 + 7175^2 .

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 67416689 - 2¹² = 67412593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67412689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3629 + ... + 12165.

It is an arithmetic number, because the mean of its divisors is an integer number (8644725).

Almost surely, 2^67416689 is an apocalyptic number.

It is an amenable number.

67416689 is a deficient number, since it is larger than the sum of its proper divisors (1741111).

67416689 is a wasteful number, since it uses less digits than its factorization.

67416689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8739.

The product of its digits is 435456, while the sum is 47.

The square root of 67416689 is about 8210.7666511721. The cubic root of 67416689 is about 406.9950617877.

The spelling of 67416689 in words is "sixty-seven million, four hundred sixteen thousand, six hundred eighty-nine".