4064981 has 4 divisors (see below), whose sum is σ = 4088652. Its totient is φ = 4041312.

The previous prime is 4064971. The next prime is 4065001. The reversal of 4064981 is 1894604.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3478225 + 586756 = 1865^2 + 766^2 .

It is a cyclic number.

It is not a de Polignac number, because 4064981 - 2¹⁰ = 4063957 is a prime.

It is a super-2 number, since 2×4064981² = 33048141060722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4064971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11576 + ... + 11921.

It is an arithmetic number, because the mean of its divisors is an integer number (1022163).

Almost surely, 2^4064981 is an apocalyptic number.

It is an amenable number.

4064981 is a deficient number, since it is larger than the sum of its proper divisors (23671).

4064981 is a wasteful number, since it uses less digits than its factorization.

4064981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23670.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 4064981 is about 2016.1798034898. The cubic root of 4064981 is about 159.5950828987.

The spelling of 4064981 in words is "four million, sixty-four thousand, nine hundred eighty-one".