4245681 has 8 divisors (see below), whose sum is σ = 6175584. Its totient is φ = 2573120.

The previous prime is 4245679. The next prime is 4245743. The reversal of 4245681 is 1865424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4245681 - 2¹ = 4245679 is a prime.

It is a super-2 number, since 2×4245681² = 36051614307522, which contains 22 as substring.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4245601) 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, 64296 + ... + 64361.

It is an arithmetic number, because the mean of its divisors is an integer number (771948).

Almost surely, 2^4245681 is an apocalyptic number.

It is an amenable number.

4245681 is a deficient number, since it is larger than the sum of its proper divisors (1929903).

4245681 is a wasteful number, since it uses less digits than its factorization.

4245681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128671.

The product of its digits is 7680, while the sum is 30.

The square root of 4245681 is about 2060.5050351795. The cubic root of 4245681 is about 161.9257013355.

It can be divided in two parts, 424 and 5681, that added together give a triangular number (6105 = T₁₁₀).

The spelling of 4245681 in words is "four million, two hundred forty-five thousand, six hundred eighty-one".