67739680 has 96 divisors (see below), whose sum is σ = 166561920. Its totient is φ = 26019840.

The previous prime is 67739653. The next prime is 67739687. The reversal of 67739680 is 8693776.

It is a self number, because there is not a number n which added to its sum of digits gives 67739680.

It is not an unprimeable number, because it can be changed into a prime (67739687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 761076 + ... + 761164.

It is an arithmetic number, because the mean of its divisors is an integer number (1735020).

Almost surely, 2^67739680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67739680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83280960).

67739680 is an abundant number, since it is smaller than the sum of its proper divisors (98822240).

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

67739680 is a wasteful number, since it uses less digits than its factorization.

67739680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 67739680 is about 8230.4118973475. The cubic root of 67739680 is about 407.6439929236.

The spelling of 67739680 in words is "sixty-seven million, seven hundred thirty-nine thousand, six hundred eighty".