67749369 has 16 divisors (see below), whose sum is σ = 96155712. Its totient is φ = 42283008.

The previous prime is 67749349. The next prime is 67749371. The reversal of 67749369 is 96394776.

It is not a de Polignac number, because 67749369 - 2⁵ = 67749337 is a prime.

It is a super-2 number, since 2×67749369² = 9179953999796322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (67749349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6402 + ... + 13284.

It is an arithmetic number, because the mean of its divisors is an integer number (6009732).

Almost surely, 2^67749369 is an apocalyptic number.

It is an amenable number.

67749369 is a deficient number, since it is larger than the sum of its proper divisors (28406343).

67749369 is a wasteful number, since it uses less digits than its factorization.

67749369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7096.

The product of its digits is 1714608, while the sum is 51.

The square root of 67749369 is about 8231.0004859677. Note that the first 3 decimals coincide. The cubic root of 67749369 is about 407.6634274921.

The spelling of 67749369 in words is "sixty-seven million, seven hundred forty-nine thousand, three hundred sixty-nine".