77012 has 12 divisors (see below), whose sum is σ = 145236. Its totient is φ = 35520.

The previous prime is 77003. The next prime is 77017. The reversal of 77012 is 21077.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21316 + 55696 = 146^2 + 236^2 .

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, 689 + ... + 792.

It is an arithmetic number, because the mean of its divisors is an integer number (12103).

2⁷⁷⁰¹² is an apocalyptic number.

It is an amenable number.

77012 is a deficient number, since it is larger than the sum of its proper divisors (68224).

77012 is a wasteful number, since it uses less digits than its factorization.

77012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498 (or 1496 counting only the distinct ones).

The product of its (nonzero) digits is 98, while the sum is 17.

The square root of 77012 is about 277.5103601670. The cubic root of 77012 is about 42.5454185732.

Adding to 77012 its reverse (21077), we get a palindrome (98089).

The spelling of 77012 in words is "seventy-seven thousand, twelve", and thus it is an iban number.