67764380 has 48 divisors (see below), whose sum is σ = 151484256. Its totient is φ = 25374720.

The previous prime is 67764379. The next prime is 67764401. The reversal of 67764380 is 8346776.

It is a super-2 number, since 2×67764380² = 9184022393568800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 81527 + ... + 82353.

It is an arithmetic number, because the mean of its divisors is an integer number (3155922).

Almost surely, 2^67764380 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 67764380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75742128).

67764380 is an abundant number, since it is smaller than the sum of its proper divisors (83719876).

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

67764380 is a wasteful number, since it uses less digits than its factorization.

67764380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094 (or 1092 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 67764380 is about 8231.9122930216. The cubic root of 67764380 is about 407.6935334739.

The spelling of 67764380 in words is "sixty-seven million, seven hundred sixty-four thousand, three hundred eighty".