4662640 has 40 divisors (see below), whose sum is σ = 10936800. Its totient is φ = 1848576.

The previous prime is 4662631. The next prime is 4662653. The reversal of 4662640 is 462664.

It is a tau number, because it is divible by the number of its divisors (40).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 4662599 and 4662608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13186 + ... + 13534.

It is an arithmetic number, because the mean of its divisors is an integer number (273420).

Almost surely, 2^4662640 is an apocalyptic number.

4662640 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 4662640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5468400).

4662640 is an abundant number, since it is smaller than the sum of its proper divisors (6274160).

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

4662640 is a wasteful number, since it uses less digits than its factorization.

4662640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529 (or 523 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 4662640 is about 2159.3147061047. The cubic root of 4662640 is about 167.0618533355.

The spelling of 4662640 in words is "four million, six hundred sixty-two thousand, six hundred forty".