67056420 has 24 divisors (see below), whose sum is σ = 187758144. Its totient is φ = 17881696.

The previous prime is 67056419. The next prime is 67056461. The reversal of 67056420 is 2465076.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 558744 + ... + 558863.

It is an arithmetic number, because the mean of its divisors is an integer number (7823256).

Almost surely, 2^67056420 is an apocalyptic number.

67056420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67056420 is an abundant number, since it is smaller than the sum of its proper divisors (120701724).

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

67056420 is a wasteful number, since it uses less digits than its factorization.

67056420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117619 (or 1117617 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 67056420 is about 8188.7984466587. The cubic root of 67056420 is about 406.2687842991.

It can be divided in two parts, 67056 and 420, that added together give a palindrome (67476).

The spelling of 67056420 in words is "sixty-seven million, fifty-six thousand, four hundred twenty".