76561047 has 24 divisors (see below), whose sum is σ = 117542880. Its totient is φ = 47854080.

The previous prime is 76561031. The next prime is 76561057. The reversal of 76561047 is 74016567.

It is not a de Polignac number, because 76561047 - 2⁴ = 76561031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76561007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46779 + ... + 48387.

It is an arithmetic number, because the mean of its divisors is an integer number (4897620).

Almost surely, 2^76561047 is an apocalyptic number.

76561047 is a deficient number, since it is larger than the sum of its proper divisors (40981833).

76561047 is a wasteful number, since it uses less digits than its factorization.

76561047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943 (or 1940 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 76561047 is about 8749.9169710346. The cubic root of 76561047 is about 424.6221268727.

The spelling of 76561047 in words is "seventy-six million, five hundred sixty-one thousand, forty-seven".