464672721 has 16 divisors (see below), whose sum is σ = 668082240. Its totient is φ = 286318080.

The previous prime is 464672687. The next prime is 464672729. The reversal of 464672721 is 127276464.

It is not a de Polignac number, because 464672721 - 2²³ = 456284113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 464672721.

It is not an unprimeable number, because it can be changed into a prime (464672729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97080 + ... + 101753.

It is an arithmetic number, because the mean of its divisors is an integer number (41755140).

Almost surely, 2^464672721 is an apocalyptic number.

464672721 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

464672721 is a deficient number, since it is larger than the sum of its proper divisors (203409519).

464672721 is a wasteful number, since it uses less digits than its factorization.

464672721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198896.

The product of its digits is 112896, while the sum is 39.

The square root of 464672721 is about 21556.2687170113. The cubic root of 464672721 is about 774.5492882628.

The spelling of 464672721 in words is "four hundred sixty-four million, six hundred seventy-two thousand, seven hundred twenty-one".