67764378 has 16 divisors (see below), whose sum is σ = 147849696. Its totient is φ = 20534640.

The previous prime is 67764373. The next prime is 67764379. The reversal of 67764378 is 87346776.

It is not an unprimeable number, because it can be changed into a prime (67764373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513301 + ... + 513432.

It is an arithmetic number, because the mean of its divisors is an integer number (9240606).

Almost surely, 2^67764378 is an apocalyptic number.

67764378 is an abundant number, since it is smaller than the sum of its proper divisors (80085318).

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

67764378 is a wasteful number, since it uses less digits than its factorization.

67764378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026749.

The product of its digits is 1185408, while the sum is 48.

The square root of 67764378 is about 8231.9121715431. The cubic root of 67764378 is about 407.6935294630.

The spelling of 67764378 in words is "sixty-seven million, seven hundred sixty-four thousand, three hundred seventy-eight".