67428660 has 96 divisors (see below), whose sum is σ = 205132032. Its totient is φ = 16450560.

The previous prime is 67428643. The next prime is 67428661. The reversal of 67428660 is 6682476.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67428661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106545 + ... + 107175.

It is an arithmetic number, because the mean of its divisors is an integer number (2136792).

Almost surely, 2^67428660 is an apocalyptic number.

67428660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67428660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102566016).

67428660 is an abundant number, since it is smaller than the sum of its proper divisors (137703372).

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

67428660 is a wasteful number, since it uses less digits than its factorization.

67428660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793 (or 791 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 67428660 is about 8211.4956006808. The cubic root of 67428660 is about 407.0191500346.

The spelling of 67428660 in words is "sixty-seven million, four hundred twenty-eight thousand, six hundred sixty".