165542764 has 6 divisors (see below), whose sum is σ = 289699844. Its totient is φ = 82771380.

The previous prime is 165542761. The next prime is 165542779. The reversal of 165542764 is 467245561.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (165542761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20692842 + ... + 20692849.

Almost surely, 2^165542764 is an apocalyptic number.

It is an amenable number.

165542764 is a deficient number, since it is larger than the sum of its proper divisors (124157080).

165542764 is a wasteful number, since it uses less digits than its factorization.

165542764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41385695 (or 41385693 counting only the distinct ones).

The product of its digits is 201600, while the sum is 40.

The square root of 165542764 is about 12866.3422929751. The cubic root of 165542764 is about 549.0814021696.

The spelling of 165542764 in words is "one hundred sixty-five million, five hundred forty-two thousand, seven hundred sixty-four".