76557047 has 8 divisors (see below), whose sum is σ = 87984000. Its totient is φ = 65252664.

The previous prime is 76557037. The next prime is 76557049. The reversal of 76557047 is 74075567.

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 76557047 - 2⁸ = 76556791 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 76556995 and 76557013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76557049) 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, 29297 + ... + 31802.

It is an arithmetic number, because the mean of its divisors is an integer number (10998000).

Almost surely, 2^76557047 is an apocalyptic number.

76557047 is a deficient number, since it is larger than the sum of its proper divisors (11426953).

76557047 is a wasteful number, since it uses less digits than its factorization.

76557047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61285.

The product of its (nonzero) digits is 205800, while the sum is 41.

The square root of 76557047 is about 8749.6883944515. The cubic root of 76557047 is about 424.6147318236.

The spelling of 76557047 in words is "seventy-six million, five hundred fifty-seven thousand, forty-seven".