67613489 has 2 divisors, whose sum is σ = 67613490. Its totient is φ = 67613488.

The previous prime is 67613477. The next prime is 67613503. The reversal of 67613489 is 98431676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56776225 + 10837264 = 7535^2 + 3292^2 .

It is a cyclic number.

It is not a de Polignac number, because 67613489 - 2²⁰ = 66564913 is a prime.

It is not a weakly prime, because it can be changed into another prime (67613459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33806744 + 33806745.

It is an arithmetic number, because the mean of its divisors is an integer number (33806745).

Almost surely, 2^67613489 is an apocalyptic number.

It is an amenable number.

67613489 is a deficient number, since it is larger than the sum of its proper divisors (1).

67613489 is an equidigital number, since it uses as much as digits as its factorization.

67613489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 67613489 is about 8222.7421825082. The cubic root of 67613489 is about 407.3907047521.

The spelling of 67613489 in words is "sixty-seven million, six hundred thirteen thousand, four hundred eighty-nine".