76643516 has 6 divisors (see below), whose sum is σ = 134126160. Its totient is φ = 38321756.

The previous prime is 76643467. The next prime is 76643519. The reversal of 76643516 is 61534667.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 76643516.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76643519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9580436 + ... + 9580443.

It is an arithmetic number, because the mean of its divisors is an integer number (22354360).

Almost surely, 2^76643516 is an apocalyptic number.

It is an amenable number.

76643516 is a deficient number, since it is larger than the sum of its proper divisors (57482644).

76643516 is a wasteful number, since it uses less digits than its factorization.

76643516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19160883 (or 19160881 counting only the distinct ones).

The product of its digits is 90720, while the sum is 38.

The square root of 76643516 is about 8754.6282616682. The cubic root of 76643516 is about 424.7745350820.

The spelling of 76643516 in words is "seventy-six million, six hundred forty-three thousand, five hundred sixteen".