165430647 has 16 divisors (see below), whose sum is σ = 250298880. Its totient is φ = 107939736.

The previous prime is 165430633. The next prime is 165430673. The reversal of 165430647 is 746034561.

It is a happy number.

165430647 is a `hidden beast` number, since 1 + 6 + 5 + 4 + 3 + 0 + 647 = 666.

It is not a de Polignac number, because 165430647 - 2¹⁰ = 165429623 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165430147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63913 + ... + 66450.

It is an arithmetic number, because the mean of its divisors is an integer number (15643680).

Almost surely, 2^165430647 is an apocalyptic number.

165430647 is a deficient number, since it is larger than the sum of its proper divisors (84868233).

165430647 is a wasteful number, since it uses less digits than its factorization.

165430647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130419 (or 130413 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 165430647 is about 12861.9845669321. The cubic root of 165430647 is about 548.9574155509.

The spelling of 165430647 in words is "one hundred sixty-five million, four hundred thirty thousand, six hundred forty-seven".