77654136 has 64 divisors (see below), whose sum is σ = 224582400. Its totient is φ = 21915648.

The previous prime is 77654111. The next prime is 77654149. The reversal of 77654136 is 63145677.

It is a junction number, because it is equal to n+sod(n) for n = 77654094 and 77654103.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11160 + ... + 16728.

It is an arithmetic number, because the mean of its divisors is an integer number (3509100).

Almost surely, 2^77654136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77654136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112291200).

77654136 is an abundant number, since it is smaller than the sum of its proper divisors (146928264).

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

77654136 is a wasteful number, since it uses less digits than its factorization.

77654136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5668 (or 5664 counting only the distinct ones).

The product of its digits is 105840, while the sum is 39.

The square root of 77654136 is about 8812.1584189119. The cubic root of 77654136 is about 426.6334115791.

The spelling of 77654136 in words is "seventy-seven million, six hundred fifty-four thousand, one hundred thirty-six".