77011 has 4 divisors (see below), whose sum is σ = 84024. Its totient is φ = 70000.

The previous prime is 77003. The next prime is 77017. The reversal of 77011 is 11077.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 77011 - 2³ = 77003 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77017) 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, 3490 + ... + 3511.

It is an arithmetic number, because the mean of its divisors is an integer number (21006).

2⁷⁷⁰¹¹ is an apocalyptic number.

77011 is a deficient number, since it is larger than the sum of its proper divisors (7013).

77011 is a wasteful number, since it uses less digits than its factorization.

77011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7012.

The product of its (nonzero) digits is 49, while the sum is 16.

The square root of 77011 is about 277.5085584266. The cubic root of 77011 is about 42.5452344218.

Adding to 77011 its reverse (11077), we get a palindrome (88088).

The spelling of 77011 in words is "seventy-seven thousand, eleven", and thus it is an iban number.