4051664 has 10 divisors (see below), whose sum is σ = 7850130. Its totient is φ = 2025824.

The previous prime is 4051633. The next prime is 4051667. The reversal of 4051664 is 4661504.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4032064 + 19600 = 2008^2 + 140^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4051667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126599 + ... + 126630.

It is an arithmetic number, because the mean of its divisors is an integer number (785013).

Almost surely, 2^4051664 is an apocalyptic number.

It is an amenable number.

4051664 is a deficient number, since it is larger than the sum of its proper divisors (3798466).

4051664 is a wasteful number, since it uses less digits than its factorization.

4051664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253237 (or 253231 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 4051664 is about 2012.8745614171. The cubic root of 4051664 is about 159.4206128063.

The spelling of 4051664 in words is "four million, fifty-one thousand, six hundred sixty-four".