67861369 has 4 divisors (see below), whose sum is σ = 71433040. Its totient is φ = 64289700.

The previous prime is 67861361. The next prime is 67861379. The reversal of 67861369 is 96316876.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67861369 - 2³ = 67861361 is a prime.

It is a super-2 number, since 2×67861369² = 9210330805108322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67861361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1785807 + ... + 1785844.

It is an arithmetic number, because the mean of its divisors is an integer number (17858260).

Almost surely, 2^67861369 is an apocalyptic number.

It is an amenable number.

67861369 is a deficient number, since it is larger than the sum of its proper divisors (3571671).

67861369 is a wasteful number, since it uses less digits than its factorization.

67861369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3571670.

The product of its digits is 326592, while the sum is 46.

The square root of 67861369 is about 8237.8012236276. The cubic root of 67861369 is about 407.8879470096.

The spelling of 67861369 in words is "sixty-seven million, eight hundred sixty-one thousand, three hundred sixty-nine".