165477216 has 24 divisors (see below), whose sum is σ = 434377944. Its totient is φ = 55159040.

The previous prime is 165477199. The next prime is 165477227. The reversal of 165477216 is 612774561.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×165477216² = 54765418030221312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 861765 + ... + 861956.

It is an arithmetic number, because the mean of its divisors is an integer number (18099081).

Almost surely, 2^165477216 is an apocalyptic number.

165477216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165477216 is an abundant number, since it is smaller than the sum of its proper divisors (268900728).

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

165477216 is a wasteful number, since it uses less digits than its factorization.

165477216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1723734 (or 1723726 counting only the distinct ones).

The product of its digits is 70560, while the sum is 39.

The square root of 165477216 is about 12863.7947744824. The cubic root of 165477216 is about 549.0089215242.

The spelling of 165477216 in words is "one hundred sixty-five million, four hundred seventy-seven thousand, two hundred sixteen".