4601781 has 24 divisors (see below), whose sum is σ = 7413120. Its totient is φ = 2733696.

The previous prime is 4601759. The next prime is 4601789. The reversal of 4601781 is 1871064.

It is a happy number.

It is not a de Polignac number, because 4601781 - 2¹⁵ = 4569013 is a prime.

It is a super-2 number, since 2×4601781² = 42352776743922, which contains 22 as substring.

4601781 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4601789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2116 + ... + 3698.

It is an arithmetic number, because the mean of its divisors is an integer number (308880).

Almost surely, 2^4601781 is an apocalyptic number.

It is an amenable number.

4601781 is a deficient number, since it is larger than the sum of its proper divisors (2811339).

4601781 is a wasteful number, since it uses less digits than its factorization.

4601781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625 (or 1622 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 4601781 is about 2145.1762165379. The cubic root of 4601781 is about 166.3318107909.

The spelling of 4601781 in words is "four million, six hundred one thousand, seven hundred eighty-one".