67813369 has 8 divisors (see below), whose sum is σ = 73701320. Its totient is φ = 62021376.

The previous prime is 67813349. The next prime is 67813373. The reversal of 67813369 is 96331876.

It can be written as a sum of positive squares in 4 ways, for example, as 6786025 + 61027344 = 2605^2 + 7812^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67813369 - 2¹⁹ = 67289081 is a prime.

It is a super-2 number, since 2×67813369² = 9197306030260322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67813349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22512 + ... + 25345.

It is an arithmetic number, because the mean of its divisors is an integer number (9212665).

Almost surely, 2^67813369 is an apocalyptic number.

It is an amenable number.

67813369 is a deficient number, since it is larger than the sum of its proper divisors (5887951).

67813369 is a wasteful number, since it uses less digits than its factorization.

67813369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47979.

The product of its digits is 163296, while the sum is 43.

The square root of 67813369 is about 8234.8873094900. The cubic root of 67813369 is about 407.7917546314.

The spelling of 67813369 in words is "sixty-seven million, eight hundred thirteen thousand, three hundred sixty-nine".