67161380 has 96 divisors (see below), whose sum is σ = 173069568. Its totient is φ = 21542400.

The previous prime is 67161377. The next prime is 67161397. The reversal of 67161380 is 8316176.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65270 + ... + 66290.

It is an arithmetic number, because the mean of its divisors is an integer number (1802808).

Almost surely, 2^67161380 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 67161380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86534784).

67161380 is an abundant number, since it is smaller than the sum of its proper divisors (105908188).

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

67161380 is a wasteful number, since it uses less digits than its factorization.

67161380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077 (or 1075 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 67161380 is about 8195.2046954301. The cubic root of 67161380 is about 406.4806444138.

The spelling of 67161380 in words is "sixty-seven million, one hundred sixty-one thousand, three hundred eighty".