676142389 has 4 divisors (see below), whose sum is σ = 728153356. Its totient is φ = 624131424.

The previous prime is 676142353. The next prime is 676142399. The reversal of 676142389 is 983241676.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 169442289 + 506700100 = 13017^2 + 22510^2 .

It is a cyclic number.

It is not a de Polignac number, because 676142389 - 2⁹ = 676141877 is a prime.

It is a super-3 number, since 3×676142389³ (a number of 27 digits) contains 333 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 (676142399) 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, 26005464 + ... + 26005489.

It is an arithmetic number, because the mean of its divisors is an integer number (182038339).

Almost surely, 2^676142389 is an apocalyptic number.

It is an amenable number.

676142389 is a deficient number, since it is larger than the sum of its proper divisors (52010967).

676142389 is a wasteful number, since it uses less digits than its factorization.

676142389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52010966.

The product of its digits is 435456, while the sum is 46.

The square root of 676142389 is about 26002.7381058226. The cubic root of 676142389 is about 877.6999115419.

The spelling of 676142389 in words is "six hundred seventy-six million, one hundred forty-two thousand, three hundred eighty-nine".