77681094 has 16 divisors (see below), whose sum is σ = 155453232. Its totient is φ = 25878528.

The previous prime is 77681057. The next prime is 77681099. The reversal of 77681094 is 49018677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77681099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13062 + ... + 18054.

It is an arithmetic number, because the mean of its divisors is an integer number (9715827).

Almost surely, 2^77681094 is an apocalyptic number.

77681094 is an abundant number, since it is smaller than the sum of its proper divisors (77772138).

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

77681094 is a wasteful number, since it uses less digits than its factorization.

77681094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7591.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 77681094 is about 8813.6878773871. The cubic root of 77681094 is about 426.6827751351.

The spelling of 77681094 in words is "seventy-seven million, six hundred eighty-one thousand, ninety-four".