76136749 has 8 divisors (see below), whose sum is σ = 82066712. Its totient is φ = 70217280.

The previous prime is 76136747. The next prime is 76136759. The reversal of 76136749 is 94763167.

It can be written as a sum of positive squares in 4 ways, for example, as 133225 + 76003524 = 365^2 + 8718^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 76136749 - 2¹ = 76136747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76136747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19267 + ... + 22879.

It is an arithmetic number, because the mean of its divisors is an integer number (10258339).

Almost surely, 2^76136749 is an apocalyptic number.

It is an amenable number.

76136749 is a deficient number, since it is larger than the sum of its proper divisors (5929963).

76136749 is a wasteful number, since it uses less digits than its factorization.

76136749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5247.

The product of its digits is 190512, while the sum is 43.

The square root of 76136749 is about 8725.6374552235. The cubic root of 76136749 is about 423.8362608680.

The spelling of 76136749 in words is "seventy-six million, one hundred thirty-six thousand, seven hundred forty-nine".