77161344 has 192 divisors, whose sum is σ = 235191600. Its totient is φ = 22364160.

The previous prime is 77161333. The next prime is 77161361. The reversal of 77161344 is 44316177.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1881964 + ... + 1882004.

Almost surely, 2^77161344 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 77161344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117595800).

77161344 is an abundant number, since it is smaller than the sum of its proper divisors (158030256).

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

77161344 is a wasteful number, since it uses less digits than its factorization.

77161344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 88 counting only the distinct ones).

The product of its digits is 14112, while the sum is 33.

The square root of 77161344 is about 8784.1530041319. The cubic root of 77161344 is about 425.7290260242.

The spelling of 77161344 in words is "seventy-seven million, one hundred sixty-one thousand, three hundred forty-four".