4867781 has 4 divisors (see below), whose sum is σ = 5124000. Its totient is φ = 4611564.

The previous prime is 4867777. The next prime is 4867799. The reversal of 4867781 is 1877684.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4867781 - 2² = 4867777 is a prime.

It is a super-2 number, since 2×4867781² = 47390583727922, 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 (4867711) 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, 128081 + ... + 128118.

It is an arithmetic number, because the mean of its divisors is an integer number (1281000).

Almost surely, 2^4867781 is an apocalyptic number.

It is an amenable number.

4867781 is a deficient number, since it is larger than the sum of its proper divisors (256219).

4867781 is a wasteful number, since it uses less digits than its factorization.

4867781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256218.

The product of its digits is 75264, while the sum is 41.

The square root of 4867781 is about 2206.3048293470. The cubic root of 4867781 is about 169.4768345458.

The spelling of 4867781 in words is "four million, eight hundred sixty-seven thousand, seven hundred eighty-one".