6249681 has 6 divisors (see below), whose sum is σ = 9027330. Its totient is φ = 4166448.

The previous prime is 6249679. The next prime is 6249697. The reversal of 6249681 is 1869426.

It can be written as a sum of positive squares in only one way, i.e., 4601025 + 1648656 = 2145^2 + 1284^2 .

It is not a de Polignac number, because 6249681 - 2¹ = 6249679 is a prime.

It is a super-2 number, since 2×6249681² = 78117025203522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6249281) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 347196 + ... + 347213.

It is an arithmetic number, because the mean of its divisors is an integer number (1504555).

Almost surely, 2^6249681 is an apocalyptic number.

It is an amenable number.

6249681 is a deficient number, since it is larger than the sum of its proper divisors (2777649).

6249681 is a wasteful number, since it uses less digits than its factorization.

6249681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694415 (or 694412 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 6249681 is about 2499.9361991859. The cubic root of 6249681 is about 184.1984409959.

The spelling of 6249681 in words is "six million, two hundred forty-nine thousand, six hundred eighty-one".