67289620 has 24 divisors (see below), whose sum is σ = 141488424. Its totient is φ = 26881536.

The previous prime is 67289617. The next prime is 67289627. The reversal of 67289620 is 2698276.

It can be written as a sum of positive squares in 4 ways, for example, as 35952016 + 31337604 = 5996^2 + 5598^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67289627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19032 + ... + 22288.

It is an arithmetic number, because the mean of its divisors is an integer number (5895351).

Almost surely, 2^67289620 is an apocalyptic number.

It is an amenable number.

67289620 is an abundant number, since it is smaller than the sum of its proper divisors (74198804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67289620 is a wasteful number, since it uses less digits than its factorization.

67289620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4299 (or 4297 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 67289620 is about 8203.0250517721. The cubic root of 67289620 is about 406.7391954605.

The spelling of 67289620 in words is "sixty-seven million, two hundred eighty-nine thousand, six hundred twenty".