134665947 has 24 divisors (see below), whose sum is σ = 212363424. Its totient is φ = 81730944.

The previous prime is 134665889. The next prime is 134665957. The reversal of 134665947 is 749566431.

134665947 is a `hidden beast` number, since 13 + 46 + 6 + 594 + 7 = 666.

134665947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 134665947 - 2⁷ = 134665819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (134665957) 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, 658 + ... + 16424.

It is an arithmetic number, because the mean of its divisors is an integer number (8848476).

Almost surely, 2^134665947 is an apocalyptic number.

134665947 is a deficient number, since it is larger than the sum of its proper divisors (77697477).

134665947 is a wasteful number, since it uses less digits than its factorization.

134665947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15859 (or 15856 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 134665947 is about 11604.5657824841. The cubic root of 134665947 is about 512.5693066691.

The spelling of 134665947 in words is "one hundred thirty-four million, six hundred sixty-five thousand, nine hundred forty-seven".