4364640 has 144 divisors (see below), whose sum is σ = 17061408. Its totient is φ = 995328.

The previous prime is 4364621. The next prime is 4364653. The reversal of 4364640 is 464634.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9864 + ... + 10296.

It is an arithmetic number, because the mean of its divisors is an integer number (118482).

Almost surely, 2^4364640 is an apocalyptic number.

4364640 is a gapful number since it is divisible by the number (40) 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 4364640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8530704).

4364640 is an abundant number, since it is smaller than the sum of its proper divisors (12696768).

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

4364640 is a wasteful number, since it uses less digits than its factorization.

4364640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 4364640 is about 2089.1720848221. The cubic root of 4364640 is about 163.4241153900.

The spelling of 4364640 in words is "four million, three hundred sixty-four thousand, six hundred forty".