77133858 has 32 divisors (see below), whose sum is σ = 161519616. Its totient is φ = 24510288.

The previous prime is 77133857. The next prime is 77133869. The reversal of 77133858 is 85833177.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (77133853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49885 + ... + 51407.

It is an arithmetic number, because the mean of its divisors is an integer number (5047488).

Almost surely, 2^77133858 is an apocalyptic number.

77133858 is an abundant number, since it is smaller than the sum of its proper divisors (84385758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77133858 is a wasteful number, since it uses less digits than its factorization.

77133858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1918.

The product of its digits is 141120, while the sum is 42.

The square root of 77133858 is about 8782.5883428520. The cubic root of 77133858 is about 425.6784697176.

The spelling of 77133858 in words is "seventy-seven million, one hundred thirty-three thousand, eight hundred fifty-eight".