77434 has 8 divisors (see below), whose sum is σ = 132768. Its totient is φ = 33180.

The previous prime is 77431. The next prime is 77447. The reversal of 77434 is 43477.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 77399 and 77408.

It is not an unprimeable number, because it can be changed into a prime (77431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2752 + ... + 2779.

It is an arithmetic number, because the mean of its divisors is an integer number (16596).

2⁷⁷⁴³⁴ is an apocalyptic number.

77434 is a deficient number, since it is larger than the sum of its proper divisors (55334).

77434 is a wasteful number, since it uses less digits than its factorization.

77434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5540.

The product of its digits is 2352, while the sum is 25.

The square root of 77434 is about 278.2696533940. The cubic root of 77434 is about 42.6229886135.

It can be divided in two parts, 774 and 34, that added together give a palindrome (808).

The spelling of 77434 in words is "seventy-seven thousand, four hundred thirty-four".