165420760 has 16 divisors (see below), whose sum is σ = 372196800. Its totient is φ = 66168288.

The previous prime is 165420757. The next prime is 165420763. The reversal of 165420760 is 67024561.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (165420757) and next prime (165420763).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165420763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2067720 + ... + 2067799.

It is an arithmetic number, because the mean of its divisors is an integer number (23262300).

Almost surely, 2^165420760 is an apocalyptic number.

165420760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165420760 is an abundant number, since it is smaller than the sum of its proper divisors (206776040).

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

165420760 is a wasteful number, since it uses less digits than its factorization.

165420760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4135530 (or 4135526 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 165420760 is about 12861.6002114822. The cubic root of 165420760 is about 548.9464791450.

The spelling of 165420760 in words is "one hundred sixty-five million, four hundred twenty thousand, seven hundred sixty".