6516434 has 4 divisors (see below), whose sum is σ = 9774654. Its totient is φ = 3258216.

The previous prime is 6516431. The next prime is 6516437. The reversal of 6516434 is 4346156.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (6516431) and next prime (6516437).

It can be written as a sum of positive squares in only one way, i.e., 5313025 + 1203409 = 2305^2 + 1097^2 .

It is a Curzon number.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 6516397 and 6516406.

It is not an unprimeable number, because it can be changed into a prime (6516431) 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 as a sum of consecutive naturals, namely, 1629107 + ... + 1629110.

Almost surely, 2^6516434 is an apocalyptic number.

6516434 is a deficient number, since it is larger than the sum of its proper divisors (3258220).

6516434 is a wasteful number, since it uses less digits than its factorization.

6516434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3258219.

The product of its digits is 8640, while the sum is 29.

The square root of 6516434 is about 2552.7306947659. The cubic root of 6516434 is about 186.7827077519.

The spelling of 6516434 in words is "six million, five hundred sixteen thousand, four hundred thirty-four".