513320646 has 8 divisors (see below), whose sum is σ = 1026641304. Its totient is φ = 171106880.

The previous prime is 513320641. The next prime is 513320651. The reversal of 513320646 is 646023315.

It is an interprime number because it is at equal distance from previous prime (513320641) and next prime (513320651).

It is a sphenic number, since it is the product of 3 distinct primes.

513320646 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513320641) 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, 42776715 + ... + 42776726.

It is an arithmetic number, because the mean of its divisors is an integer number (128330163).

Almost surely, 2^513320646 is an apocalyptic number.

513320646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

513320646 is a wasteful number, since it uses less digits than its factorization.

513320646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85553446.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 513320646 is about 22656.5806334495. The cubic root of 513320646 is about 800.6872459056.

The spelling of 513320646 in words is "five hundred thirteen million, three hundred twenty thousand, six hundred forty-six".