4651668 has 90 divisors (see below), whose sum is σ = 14194026. Its totient is φ = 1324512.

The previous prime is 4651663. The next prime is 4651709. The reversal of 4651668 is 8661564.

It can be written as a sum of positive squares in only one way, i.e., 4588164 + 63504 = 2142^2 + 252^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4651663) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 15730 + ... + 16022.

Almost surely, 2^4651668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4651668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7097013).

4651668 is an abundant number, since it is smaller than the sum of its proper divisors (9542358).

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

4651668 is a wasteful number, since it uses less digits than its factorization.

4651668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323 (or 305 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 4651668 is about 2156.7725888466. The cubic root of 4651668 is about 166.9307085814.

The spelling of 4651668 in words is "four million, six hundred fifty-one thousand, six hundred sixty-eight".