3927664 has 40 divisors (see below), whose sum is σ = 8561952. Its totient is φ = 1731840.

The previous prime is 3927647. The next prime is 3927667. The reversal of 3927664 is 4667293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3927667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4374 + ... + 5194.

Almost surely, 2^3927664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3927664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4280976).

3927664 is an abundant number, since it is smaller than the sum of its proper divisors (4634288).

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

3927664 is a wasteful number, since it uses less digits than its factorization.

3927664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865 (or 859 counting only the distinct ones).

The product of its digits is 54432, while the sum is 37.

The square root of 3927664 is about 1981.8334945197. The cubic root of 3927664 is about 157.7773930795. Note that the first 3 decimals are identical.

It can be divided in two parts, 39276 and 64, that added together give a triangular number (39340 = T₂₈₀).

The spelling of 3927664 in words is "three million, nine hundred twenty-seven thousand, six hundred sixty-four".