162620640 has 576 divisors, whose sum is σ = 733090176. Its totient is φ = 31850496.

The previous prime is 162620629. The next prime is 162620659. The reversal of 162620640 is 46026261.

It is a happy number.

162620640 is a `hidden beast` number, since 16 + 2 + 6 + 2 + 0 + 640 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2227644 + ... + 2227716.

It is an arithmetic number, because the mean of its divisors is an integer number (1272726).

Almost surely, 2^162620640 is an apocalyptic number.

162620640 is a gapful number since it is divisible by the number (10) 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 162620640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (366545088).

162620640 is an abundant number, since it is smaller than the sum of its proper divisors (570469536).

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

162620640 is a wasteful number, since it uses less digits than its factorization.

162620640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 162620640 is about 12752.2797961776. The cubic root of 162620640 is about 545.8314498054.

The spelling of 162620640 in words is "one hundred sixty-two million, six hundred twenty thousand, six hundred forty".