162649620 has 216 divisors, whose sum is σ = 596048544. Its totient is φ = 37122624.

The previous prime is 162649573. The next prime is 162649637. The reversal of 162649620 is 26946261.

162649620 is a `hidden beast` number, since 1 + 6 + 2 + 649 + 6 + 2 + 0 = 666.

It is a super-2 number, since 2×162649620² = 52909797772288800, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 237799 + ... + 238481.

It is an arithmetic number, because the mean of its divisors is an integer number (2759484).

Almost surely, 2^162649620 is an apocalyptic number.

162649620 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 162649620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298024272).

162649620 is an abundant number, since it is smaller than the sum of its proper divisors (433398924).

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

162649620 is a wasteful number, since it uses less digits than its factorization.

162649620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721 (or 700 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 162649620 is about 12753.4160129747. The cubic root of 162649620 is about 545.8638713887.

The spelling of 162649620 in words is "one hundred sixty-two million, six hundred forty-nine thousand, six hundred twenty".