65161506 has 8 divisors (see below), whose sum is σ = 130323024. Its totient is φ = 21720500.

The previous prime is 65161489. The next prime is 65161517. The reversal of 65161506 is 60516156.

It is a sphenic number, since it is the product of 3 distinct primes.

65161506 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 5430120 + ... + 5430131.

It is an arithmetic number, because the mean of its divisors is an integer number (16290378).

Almost surely, 2^65161506 is an apocalyptic number.

65161506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

65161506 is a wasteful number, since it uses less digits than its factorization.

65161506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10860256.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 65161506 is about 8072.2677111206. The cubic root of 65161506 is about 402.4053113681.

It can be divided in two parts, 6516150 and 6, that added together give a palindrome (6516156).

The spelling of 65161506 in words is "sixty-five million, one hundred sixty-one thousand, five hundred six".