76673381 has 4 divisors (see below), whose sum is σ = 76766700. Its totient is φ = 76580064.

The previous prime is 76673327. The next prime is 76673413. The reversal of 76673381 is 18337667.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18337667 = 71 ⋅258277.

It can be written as a sum of positive squares in 2 ways, for example, as 49477156 + 27196225 = 7034^2 + 5215^2 .

It is a cyclic number.

It is not a de Polignac number, because 76673381 - 2¹⁴ = 76656997 is a prime.

It is a super-2 number, since 2×76673381² = 11757614707942322, 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 (76673581) 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 3 ways as a sum of consecutive naturals, for example, 45416 + ... + 47073.

It is an arithmetic number, because the mean of its divisors is an integer number (19191675).

Almost surely, 2^76673381 is an apocalyptic number.

It is an amenable number.

76673381 is a deficient number, since it is larger than the sum of its proper divisors (93319).

76673381 is an equidigital number, since it uses as much as digits as its factorization.

76673381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93318.

The product of its digits is 127008, while the sum is 41.

The square root of 76673381 is about 8756.3337647671. Note that the first 3 decimals coincide. The cubic root of 76673381 is about 424.8297006275.

It can be divided in two parts, 766 and 73381, that added together give a palindrome (74147).

The spelling of 76673381 in words is "seventy-six million, six hundred seventy-three thousand, three hundred eighty-one".