642602160 has 200 divisors, whose sum is σ = 2251860336. Its totient is φ = 169827840.

The previous prime is 642602141. The next prime is 642602171. The reversal of 642602160 is 61206246.

It is a happy number.

642602160 is a `hidden beast` number, since 6 + 42 + 602 + 16 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 39 ways as a sum of consecutive naturals, for example, 848502 + ... + 849258.

Almost surely, 2^642602160 is an apocalyptic number.

642602160 is a gapful number since it is divisible by the number (60) 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 642602160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1125930168).

642602160 is an abundant number, since it is smaller than the sum of its proper divisors (1609258176).

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

642602160 is a wasteful number, since it uses less digits than its factorization.

642602160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913 (or 898 counting only the distinct ones).

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

The square root of 642602160 is about 25349.5988133935. The cubic root of 642602160 is about 862.9402516117.

The spelling of 642602160 in words is "six hundred forty-two million, six hundred two thousand, one hundred sixty".