67713128 has 16 divisors (see below), whose sum is σ = 145099680. Its totient is φ = 29019888.

The previous prime is 67713119. The next prime is 67713137. The reversal of 67713128 is 82131776.

It is an interprime number because it is at equal distance from previous prime (67713119) and next prime (67713137).

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 604526 + ... + 604637.

It is an arithmetic number, because the mean of its divisors is an integer number (9068730).

Almost surely, 2^67713128 is an apocalyptic number.

It is an amenable number.

67713128 is an abundant number, since it is smaller than the sum of its proper divisors (77386552).

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

67713128 is a wasteful number, since it uses less digits than its factorization.

67713128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209176 (or 1209172 counting only the distinct ones).

The product of its digits is 14112, while the sum is 35.

The square root of 67713128 is about 8228.7986972583. The cubic root of 67713128 is about 407.5907244020.

The spelling of 67713128 in words is "sixty-seven million, seven hundred thirteen thousand, one hundred twenty-eight".