67974869 has 6 divisors (see below), whose sum is σ = 70364790. Its totient is φ = 65588040.

The previous prime is 67974859. The next prime is 67974887. The reversal of 67974869 is 96847976.

It can be written as a sum of positive squares in only one way, i.e., 58599025 + 9375844 = 7655^2 + 3062^2 .

It is not a de Polignac number, because 67974869 - 2¹⁶ = 67909333 is a prime.

It is a super-2 number, since 2×67974869² = 9241165631134322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67974859) 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 5 ways as a sum of consecutive naturals, for example, 43634 + ... + 45164.

It is an arithmetic number, because the mean of its divisors is an integer number (11727465).

Almost surely, 2^67974869 is an apocalyptic number.

It is an amenable number.

67974869 is a deficient number, since it is larger than the sum of its proper divisors (2389921).

67974869 is an frugal number, since it uses more digits than its factorization.

67974869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3091 (or 1560 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 56.

The square root of 67974869 is about 8244.6873197229. The cubic root of 67974869 is about 408.1152216067.

The spelling of 67974869 in words is "sixty-seven million, nine hundred seventy-four thousand, eight hundred sixty-nine".