77133534 has 8 divisors (see below), whose sum is σ = 154267080. Its totient is φ = 25711176.

The previous prime is 77133517. The next prime is 77133547. The reversal of 77133534 is 43533177.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

77133534 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 77133495 and 77133504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6427789 + ... + 6427800.

It is an arithmetic number, because the mean of its divisors is an integer number (19283385).

Almost surely, 2^77133534 is an apocalyptic number.

77133534 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

77133534 is a wasteful number, since it uses less digits than its factorization.

77133534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12855594.

The product of its digits is 26460, while the sum is 33.

The square root of 77133534 is about 8782.5698972453. The cubic root of 77133534 is about 425.6778736974.

The spelling of 77133534 in words is "seventy-seven million, one hundred thirty-three thousand, five hundred thirty-four".