4061578 has 4 divisors (see below), whose sum is σ = 6092370. Its totient is φ = 2030788.

The previous prime is 4061569. The next prime is 4061579. The reversal of 4061578 is 8751604.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4052169 + 9409 = 2013^2 + 97^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (4061579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1015393 + ... + 1015396.

Almost surely, 2^4061578 is an apocalyptic number.

4061578 is a deficient number, since it is larger than the sum of its proper divisors (2030792).

4061578 is a wasteful number, since it uses less digits than its factorization.

4061578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2030791.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 4061578 is about 2015.3357040454. The cubic root of 4061578 is about 159.5505354424.

The spelling of 4061578 in words is "four million, sixty-one thousand, five hundred seventy-eight".