3890664 has 24 divisors (see below), whose sum is σ = 10537410. Its totient is φ = 1296864.

The previous prime is 3890659. The next prime is 3890693. The reversal of 3890664 is 4660983.

It can be written as a sum of positive squares in only one way, i.e., 2377764 + 1512900 = 1542^2 + 1230^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26947 + ... + 27090.

Almost surely, 2^3890664 is an apocalyptic number.

It is an amenable number.

3890664 is an abundant number, since it is smaller than the sum of its proper divisors (6646746).

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

3890664 is a wasteful number, since it uses less digits than its factorization.

3890664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54049 (or 54042 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 3890664 is about 1972.4766158310. The cubic root of 3890664 is about 157.2803893167.

It can be divided in two parts, 3890 and 664, that added together give a palindrome (4554).

The spelling of 3890664 in words is "three million, eight hundred ninety thousand, six hundred sixty-four".