65161404 has 108 divisors (see below), whose sum is σ = 207009712. Its totient is φ = 16917120.

The previous prime is 65161379. The next prime is 65161409. The reversal of 65161404 is 40416156.

65161404 is a `hidden beast` number, since 6 + 516 + 140 + 4 = 666.

65161404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65161409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 29424 + ... + 31560.

Almost surely, 2^65161404 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 65161404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103504856).

65161404 is an abundant number, since it is smaller than the sum of its proper divisors (141848308).

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

65161404 is a wasteful number, since it uses less digits than its factorization.

65161404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2176 (or 2160 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 65161404 is about 8072.2613931909. The cubic root of 65161404 is about 402.4051014008.

The spelling of 65161404 in words is "sixty-five million, one hundred sixty-one thousand, four hundred four".