6243961 has 4 divisors (see below), whose sum is σ = 6459300. Its totient is φ = 6028624.

The previous prime is 6243943. The next prime is 6243967. The reversal of 6243961 is 1693426.

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 2418025 + 3825936 = 1555^2 + 1956^2 .

It is a cyclic number.

It is not a de Polignac number, because 6243961 - 2⁵ = 6243929 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

6243961 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6243967) 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, 107626 + ... + 107683.

It is an arithmetic number, because the mean of its divisors is an integer number (1614825).

Almost surely, 2^6243961 is an apocalyptic number.

It is an amenable number.

6243961 is a deficient number, since it is larger than the sum of its proper divisors (215339).

6243961 is a wasteful number, since it uses less digits than its factorization.

6243961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215338.

The product of its digits is 7776, while the sum is 31.

The square root of 6243961 is about 2498.7919081028. The cubic root of 6243961 is about 184.1422281703.

It can be divided in two parts, 62439 and 61, that added together give a square (62500 = 250²).

The spelling of 6243961 in words is "six million, two hundred forty-three thousand, nine hundred sixty-one".