162645408 has 120 divisors (see below), whose sum is σ = 482993280. Its totient is φ = 53688960.

The previous prime is 162645407. The next prime is 162645421. The reversal of 162645408 is 804546261.

162645408 is a `hidden beast` number, since 1 + 6 + 2 + 645 + 4 + 0 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (162645407) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 339313 + ... + 339791.

It is an arithmetic number, because the mean of its divisors is an integer number (4024944).

Almost surely, 2^162645408 is an apocalyptic number.

162645408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 162645408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241496640).

162645408 is an abundant number, since it is smaller than the sum of its proper divisors (320347872).

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

162645408 is a wasteful number, since it uses less digits than its factorization.

162645408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 162645408 is about 12753.2508796777. The cubic root of 162645408 is about 545.8591594226.

The spelling of 162645408 in words is "one hundred sixty-two million, six hundred forty-five thousand, four hundred eight".