676505381 has 8 divisors (see below), whose sum is σ = 687003864. Its totient is φ = 666040320.

The previous prime is 676505363. The next prime is 676505399. The reversal of 676505381 is 183505676.

It is an interprime number because it is at equal distance from previous prime (676505363) and next prime (676505399).

It can be written as a sum of positive squares in 4 ways, for example, as 120253156 + 556252225 = 10966^2 + 23585^2 .

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

It is not a de Polignac number, because 676505381 - 2¹⁰ = 676504357 is a prime.

It is a super-2 number, since 2×676505381² = 915319061043910322, 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 (676505341) 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 7 ways as a sum of consecutive naturals, for example, 34091 + ... + 50151.

It is an arithmetic number, because the mean of its divisors is an integer number (85875483).

Almost surely, 2^676505381 is an apocalyptic number.

It is an amenable number.

676505381 is a deficient number, since it is larger than the sum of its proper divisors (10498483).

676505381 is a wasteful number, since it uses less digits than its factorization.

676505381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16711.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 676505381 is about 26009.7170495951. The cubic root of 676505381 is about 877.8569499875.

The spelling of 676505381 in words is "six hundred seventy-six million, five hundred five thousand, three hundred eighty-one".