67709420 has 24 divisors (see below), whose sum is σ = 143791200. Its totient is φ = 26778752.

The previous prime is 67709413. The next prime is 67709423. The reversal of 67709420 is 2490776.

It is not an unprimeable number, because it can be changed into a prime (67709423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17240 + ... + 20799.

It is an arithmetic number, because the mean of its divisors is an integer number (5991300).

Almost surely, 2^67709420 is an apocalyptic number.

It is an amenable number.

67709420 is an abundant number, since it is smaller than the sum of its proper divisors (76081780).

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

67709420 is a wasteful number, since it uses less digits than its factorization.

67709420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38137 (or 38135 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 67709420 is about 8228.5733878966. The cubic root of 67709420 is about 407.5832843185.

The spelling of 67709420 in words is "sixty-seven million, seven hundred nine thousand, four hundred twenty".