76646493 has 40 divisors (see below), whose sum is σ = 142760640. Its totient is φ = 39813120.

The previous prime is 76646491. The next prime is 76646503. The reversal of 76646493 is 39464667.

It is not a de Polignac number, because 76646493 - 2¹ = 76646491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76646491) 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 39 ways as a sum of consecutive naturals, for example, 93 + ... + 12381.

It is an arithmetic number, because the mean of its divisors is an integer number (3569016).

Almost surely, 2^76646493 is an apocalyptic number.

It is an amenable number.

76646493 is a deficient number, since it is larger than the sum of its proper divisors (66114147).

76646493 is a wasteful number, since it uses less digits than its factorization.

76646493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12319 (or 12310 counting only the distinct ones).

The product of its digits is 653184, while the sum is 45.

The square root of 76646493 is about 8754.7982843695. The cubic root of 76646493 is about 424.7800347315.

The spelling of 76646493 in words is "seventy-six million, six hundred forty-six thousand, four hundred ninety-three".