67990719 has 16 divisors (see below), whose sum is σ = 96112640. Its totient is φ = 42677280.

The previous prime is 67990687. The next prime is 67990733. The reversal of 67990719 is 91709976.

It is not a de Polignac number, because 67990719 - 2⁵ = 67990687 is a prime.

It is a super-2 number, since 2×67990719² = 9245475740273922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67990739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6439 + ... + 13320.

It is an arithmetic number, because the mean of its divisors is an integer number (6007040).

Almost surely, 2^67990719 is an apocalyptic number.

67990719 is a deficient number, since it is larger than the sum of its proper divisors (28121921).

67990719 is a wasteful number, since it uses less digits than its factorization.

67990719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19830.

The product of its (nonzero) digits is 214326, while the sum is 48.

The square root of 67990719 is about 8245.6484887485. The cubic root of 67990719 is about 408.1469398169.

The spelling of 67990719 in words is "sixty-seven million, nine hundred ninety thousand, seven hundred nineteen".