77561076 has 24 divisors (see below), whose sum is σ = 183678880. Its totient is φ = 25467552.

The previous prime is 77561063. The next prime is 77561119. The reversal of 77561076 is 67016577.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47431 + ... + 49038.

Almost surely, 2^77561076 is an apocalyptic number.

It is an amenable number.

77561076 is an abundant number, since it is smaller than the sum of its proper divisors (106117804).

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

77561076 is a wasteful number, since it uses less digits than its factorization.

77561076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96543 (or 96541 counting only the distinct ones).

The product of its (nonzero) digits is 61740, while the sum is 39.

The square root of 77561076 is about 8806.8766313603. The cubic root of 77561076 is about 426.4629189409.

The spelling of 77561076 in words is "seventy-seven million, five hundred sixty-one thousand, seventy-six".