67604689 has 2 divisors, whose sum is σ = 67604690. Its totient is φ = 67604688.

The previous prime is 67604681. The next prime is 67604731. The reversal of 67604689 is 98640676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42354064 + 25250625 = 6508^2 + 5025^2 .

It is a cyclic number.

It is not a de Polignac number, because 67604689 - 2³ = 67604681 is a prime.

It is not a weakly prime, because it can be changed into another prime (67604681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33802344 + 33802345.

It is an arithmetic number, because the mean of its divisors is an integer number (33802345).

Almost surely, 2^67604689 is an apocalyptic number.

It is an amenable number.

67604689 is a deficient number, since it is larger than the sum of its proper divisors (1).

67604689 is an equidigital number, since it uses as much as digits as its factorization.

67604689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 67604689 is about 8222.2070637998. The cubic root of 67604689 is about 407.3730298089.

It can be divided in two parts, 6760 and 4689, that added together give a square (11449 = 107²).

The spelling of 67604689 in words is "sixty-seven million, six hundred four thousand, six hundred eighty-nine".