65161146 has 16 divisors (see below), whose sum is σ = 137181600. Its totient is φ = 20577168.

The previous prime is 65161141. The next prime is 65161169. The reversal of 65161146 is 64116156.

It is not an unprimeable number, because it can be changed into a prime (65161141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285681 + ... + 285908.

It is an arithmetic number, because the mean of its divisors is an integer number (8573850).

Almost surely, 2^65161146 is an apocalyptic number.

65161146 is an abundant number, since it is smaller than the sum of its proper divisors (72020454).

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

65161146 is a wasteful number, since it uses less digits than its factorization.

65161146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571613.

The product of its digits is 4320, while the sum is 30.

The square root of 65161146 is about 8072.2454125231. The cubic root of 65161146 is about 402.4045703059.

The spelling of 65161146 in words is "sixty-five million, one hundred sixty-one thousand, one hundred forty-six".