4661620 has 24 divisors (see below), whose sum is σ = 9952488. Its totient is φ = 1833600.

The previous prime is 4661609. The next prime is 4661639. The reversal of 4661620 is 261664.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 285156 + 4376464 = 534^2 + 2092^2 .

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, 691 + ... + 3130.

It is an arithmetic number, because the mean of its divisors is an integer number (414687).

Almost surely, 2^4661620 is an apocalyptic number.

It is an amenable number.

4661620 is an abundant number, since it is smaller than the sum of its proper divisors (5290868).

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

4661620 is a wasteful number, since it uses less digits than its factorization.

4661620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3891 (or 3889 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 4661620 is about 2159.0785071414. The cubic root of 4661620 is about 167.0496702863.

The spelling of 4661620 in words is "four million, six hundred sixty-one thousand, six hundred twenty".