77606 has 4 divisors (see below), whose sum is σ = 116412. Its totient is φ = 38802.

The previous prime is 77591. The next prime is 77611. The reversal of 77606 is 60677.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60677 = 47 ⋅1291.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19400 + ... + 19403.

It is an arithmetic number, because the mean of its divisors is an integer number (29103).

2⁷⁷⁶⁰⁶ is an apocalyptic number.

77606 is a deficient number, since it is larger than the sum of its proper divisors (38806).

77606 is a wasteful number, since it uses less digits than its factorization.

77606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38805.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 77606 is about 278.5785347079. The cubic root of 77606 is about 42.6545239969.

The spelling of 77606 in words is "seventy-seven thousand, six hundred six".