165650061 has 12 divisors (see below), whose sum is σ = 226130208. Its totient is φ = 107861544.

The previous prime is 165650033. The next prime is 165650099. The reversal of 165650061 is 160056561.

It is not a de Polignac number, because 165650061 - 2¹¹ = 165648013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165650561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9385 + ... + 20478.

It is an arithmetic number, because the mean of its divisors is an integer number (18844184).

Almost surely, 2^165650061 is an apocalyptic number.

It is an amenable number.

165650061 is a deficient number, since it is larger than the sum of its proper divisors (60480147).

165650061 is an equidigital number, since it uses as much as digits as its factorization.

165650061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29952 (or 29909 counting only the distinct ones).

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

The square root of 165650061 is about 12870.5112952050. The cubic root of 165650061 is about 549.2000060915.

It can be divided in two parts, 1656500 and 61, that added together give a palindrome (1656561).

The spelling of 165650061 in words is "one hundred sixty-five million, six hundred fifty thousand, sixty-one".