4065724 has 24 divisors (see below), whose sum is σ = 7853328. Its totient is φ = 1829760.

The previous prime is 4065701. The next prime is 4065727. The reversal of 4065724 is 4275604.

It is a super-2 number, since 2×4065724² = 33060223288352, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 4065692 and 4065701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4065727) 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, 1179 + ... + 3085.

It is an arithmetic number, because the mean of its divisors is an integer number (327222).

Almost surely, 2^4065724 is an apocalyptic number.

It is an amenable number.

4065724 is a deficient number, since it is larger than the sum of its proper divisors (3787604).

4065724 is a wasteful number, since it uses less digits than its factorization.

4065724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1965 (or 1963 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 4065724 is about 2016.3640544306. The cubic root of 4065724 is about 159.6048059390.

The spelling of 4065724 in words is "four million, sixty-five thousand, seven hundred twenty-four".