2387664 has 40 divisors (see below), whose sum is σ = 6854720. Its totient is φ = 795744.

The previous prime is 2387629. The next prime is 2387687. The reversal of 2387664 is 4667832.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is a d-powerful number, because it can be written as 2¹⁹ + 3³ + 8³ + 7⁶ + 6² + 6⁸ + 4⁸ .

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, 2332 + ... + 3195.

It is an arithmetic number, because the mean of its divisors is an integer number (171368).

2^2387664 is an apocalyptic number.

2387664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2387664 is an abundant number, since it is smaller than the sum of its proper divisors (4467056).

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

2387664 is a wasteful number, since it uses less digits than its factorization.

2387664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5544 (or 5532 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 2387664 is about 1545.2067822787. The cubic root of 2387664 is about 133.6568035071.

The spelling of 2387664 in words is "two million, three hundred eighty-seven thousand, six hundred sixty-four".