77134875 has 32 divisors (see below), whose sum is σ = 130807872. Its totient is φ = 40352000.

The previous prime is 77134873. The next prime is 77134879. The reversal of 77134875 is 57843177.

It is a happy number.

It is not a de Polignac number, because 77134875 - 2¹ = 77134873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77134873) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17935 + ... + 21815.

It is an arithmetic number, because the mean of its divisors is an integer number (4087746).

Almost surely, 2^77134875 is an apocalyptic number.

77134875 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

77134875 is a deficient number, since it is larger than the sum of its proper divisors (53672997).

77134875 is a wasteful number, since it uses less digits than its factorization.

77134875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3952 (or 3942 counting only the distinct ones).

The product of its digits is 164640, while the sum is 42.

The square root of 77134875 is about 8782.6462413102. The cubic root of 77134875 is about 425.6803405480.

The spelling of 77134875 in words is "seventy-seven million, one hundred thirty-four thousand, eight hundred seventy-five".