164406520 has 16 divisors (see below), whose sum is σ = 369914760. Its totient is φ = 65762592.

The previous prime is 164406511. The next prime is 164406521. The reversal of 164406520 is 25604461.

164406520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×164406520³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164406521) 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, 2055042 + ... + 2055121.

Almost surely, 2^164406520 is an apocalyptic number.

164406520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164406520 is an abundant number, since it is smaller than the sum of its proper divisors (205508240).

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

164406520 is a wasteful number, since it uses less digits than its factorization.

164406520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4110174 (or 4110170 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 164406520 is about 12822.1105906945. The cubic root of 164406520 is about 547.8222646295.

The spelling of 164406520 in words is "one hundred sixty-four million, four hundred six thousand, five hundred twenty".