516402646 has 4 divisors (see below), whose sum is σ = 774603972. Its totient is φ = 258201322.

The previous prime is 516402643. The next prime is 516402713. The reversal of 516402646 is 646204615.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516402643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129100660 + ... + 129100663.

It is an arithmetic number, because the mean of its divisors is an integer number (193650993).

Almost surely, 2^516402646 is an apocalyptic number.

516402646 is a deficient number, since it is larger than the sum of its proper divisors (258201326).

516402646 is a wasteful number, since it uses less digits than its factorization.

516402646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258201325.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 516402646 is about 22724.4944058168. The cubic root of 516402646 is about 802.2865034431.

The spelling of 516402646 in words is "five hundred sixteen million, four hundred two thousand, six hundred forty-six".