4651998 has 64 divisors (see below), whose sum is σ = 10940160. Its totient is φ = 1306368.

The previous prime is 4651987. The next prime is 4652027. The reversal of 4651998 is 8991564.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63690 + ... + 63762.

It is an arithmetic number, because the mean of its divisors is an integer number (170940).

Almost surely, 2^4651998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4651998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5470080).

4651998 is an abundant number, since it is smaller than the sum of its proper divisors (6288162).

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

4651998 is a wasteful number, since it uses less digits than its factorization.

4651998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153.

The product of its digits is 77760, while the sum is 42.

The square root of 4651998 is about 2156.8490906876. The cubic root of 4651998 is about 166.9346559706.

The spelling of 4651998 in words is "four million, six hundred fifty-one thousand, nine hundred ninety-eight".