165456406 has 8 divisors (see below), whose sum is σ = 250079544. Its totient is φ = 82096560.

The previous prime is 165456373. The next prime is 165456409. The reversal of 165456406 is 604654561.

165456406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165456409) 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, 315495 + ... + 316018.

It is an arithmetic number, because the mean of its divisors is an integer number (31259943).

Almost surely, 2^165456406 is an apocalyptic number.

165456406 is a deficient number, since it is larger than the sum of its proper divisors (84623138).

165456406 is a wasteful number, since it uses less digits than its factorization.

165456406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631646.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 165456406 is about 12862.9858897536. The cubic root of 165456406 is about 548.9859065640.

The spelling of 165456406 in words is "one hundred sixty-five million, four hundred fifty-six thousand, four hundred six".