4761781 has 4 divisors (see below), whose sum is σ = 4877964. Its totient is φ = 4645600.

The previous prime is 4761773. The next prime is 4761791. The reversal of 4761781 is 1871674.

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 538756 + 4223025 = 734^2 + 2055^2 .

It is a cyclic number.

It is not a de Polignac number, because 4761781 - 2³ = 4761773 is a prime.

It is a super-2 number, since 2×4761781² = 45349116583922, which contains 22 as substring.

It is a Duffinian number.

4761781 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4761791) 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, 58030 + ... + 58111.

It is an arithmetic number, because the mean of its divisors is an integer number (1219491).

Almost surely, 2^4761781 is an apocalyptic number.

4761781 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4761781 is a deficient number, since it is larger than the sum of its proper divisors (116183).

4761781 is a wasteful number, since it uses less digits than its factorization.

4761781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116182.

The product of its digits is 9408, while the sum is 34.

The square root of 4761781 is about 2182.1505447608. The cubic root of 4761781 is about 168.2376290501.

The spelling of 4761781 in words is "four million, seven hundred sixty-one thousand, seven hundred eighty-one".