4630781 has 4 divisors (see below), whose sum is σ = 4641372. Its totient is φ = 4620192.

The previous prime is 4630763. The next prime is 4630789. The reversal of 4630781 is 1870364.

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 3865156 + 765625 = 1966^2 + 875^2 .

It is a cyclic number.

It is not a de Polignac number, because 4630781 - 2²² = 436477 is a prime.

It is a super-2 number, since 2×4630781² = 42888265339922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4630789) 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 3 ways as a sum of consecutive naturals, for example, 4610 + ... + 5523.

It is an arithmetic number, because the mean of its divisors is an integer number (1160343).

Almost surely, 2^4630781 is an apocalyptic number.

It is an amenable number.

4630781 is a deficient number, since it is larger than the sum of its proper divisors (10591).

4630781 is a wasteful number, since it uses less digits than its factorization.

4630781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10590.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 4630781 is about 2151.9249522230. The cubic root of 4630781 is about 166.6804819659.

The spelling of 4630781 in words is "four million, six hundred thirty thousand, seven hundred eighty-one".