4916781 has 20 divisors (see below), whose sum is σ = 7429884. Its totient is φ = 3240000.

The previous prime is 4916777. The next prime is 4916789. The reversal of 4916781 is 1876194.

It can be written as a sum of positive squares in 2 ways, for example, as 4473225 + 443556 = 2115^2 + 666^2 .

It is not a de Polignac number, because 4916781 - 2² = 4916777 is a prime.

It is a super-2 number, since 2×4916781² = 48349470803922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4916789) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7881 + ... + 8481.

Almost surely, 2^4916781 is an apocalyptic number.

It is an amenable number.

4916781 is a deficient number, since it is larger than the sum of its proper divisors (2513103).

4916781 is a wasteful number, since it uses less digits than its factorization.

4916781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714 (or 705 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 4916781 is about 2217.3815639172. The cubic root of 4916781 is about 170.0435989674.

The spelling of 4916781 in words is "four million, nine hundred sixteen thousand, seven hundred eighty-one".