67071420 has 72 divisors (see below), whose sum is σ = 219107616. Its totient is φ = 16509312.

The previous prime is 67071419. The next prime is 67071421. The reversal of 67071420 is 2417076.

It is an interprime number because it is at equal distance from previous prime (67071419) and next prime (67071421).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67071421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11992 + ... + 16671.

Almost surely, 2^67071420 is an apocalyptic number.

67071420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67071420 is an abundant number, since it is smaller than the sum of its proper divisors (152036196).

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

67071420 is a wasteful number, since it uses less digits than its factorization.

67071420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28691 (or 28686 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 67071420 is about 8189.7142807304. The cubic root of 67071420 is about 406.2990750971.

Adding to 67071420 its reverse (2417076), we get a palindrome (69488496).

The spelling of 67071420 in words is "sixty-seven million, seventy-one thousand, four hundred twenty".