67778832 has 80 divisors (see below), whose sum is σ = 192612672. Its totient is φ = 20367360.

The previous prime is 67778831. The next prime is 67778849. The reversal of 67778832 is 23887776.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (67778831) 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, 71868 + ... + 72804.

Almost surely, 2^67778832 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 67778832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96306336).

67778832 is an abundant number, since it is smaller than the sum of its proper divisors (124833840).

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

67778832 is a wasteful number, since it uses less digits than its factorization.

67778832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096 (or 1090 counting only the distinct ones).

The product of its digits is 790272, while the sum is 48.

The square root of 67778832 is about 8232.7900495519. The cubic root of 67778832 is about 407.7225141278.

The spelling of 67778832 in words is "sixty-seven million, seven hundred seventy-eight thousand, eight hundred thirty-two".