516432646 has 16 divisors (see below), whose sum is σ = 785667600. Its totient is φ = 254560768.

The previous prime is 516432641. The next prime is 516432671. The reversal of 516432646 is 646234615.

It is a super-2 number, since 2×516432646² = 533405355709122632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516432641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58725 + ... + 66943.

It is an arithmetic number, because the mean of its divisors is an integer number (49104225).

Almost surely, 2^516432646 is an apocalyptic number.

516432646 is a deficient number, since it is larger than the sum of its proper divisors (269234954).

516432646 is a wasteful number, since it uses less digits than its factorization.

516432646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8663.

The product of its digits is 103680, while the sum is 37.

The square root of 516432646 is about 22725.1544769227. The cubic root of 516432646 is about 802.3020392072.

It can be divided in two parts, 51643 and 2646, that added together give a square (54289 = 233²).

The spelling of 516432646 in words is "five hundred sixteen million, four hundred thirty-two thousand, six hundred forty-six".