67711889 has 4 divisors (see below), whose sum is σ = 77385024. Its totient is φ = 58038756.

The previous prime is 67711883. The next prime is 67711907. The reversal of 67711889 is 98811776.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67711889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67711883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4836557 + ... + 4836570.

It is an arithmetic number, because the mean of its divisors is an integer number (19346256).

Almost surely, 2^67711889 is an apocalyptic number.

It is an amenable number.

67711889 is a deficient number, since it is larger than the sum of its proper divisors (9673135).

67711889 is an equidigital number, since it uses as much as digits as its factorization.

67711889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9673134.

The product of its digits is 169344, while the sum is 47.

The square root of 67711889 is about 8228.7234125349. The cubic root of 67711889 is about 407.5882383849.

The spelling of 67711889 in words is "sixty-seven million, seven hundred eleven thousand, eight hundred eighty-nine".