464660021 has 16 divisors (see below), whose sum is σ = 545449344. Its totient is φ = 387543744.

The previous prime is 464660003. The next prime is 464660051. The reversal of 464660021 is 120066464.

It is not a de Polignac number, because 464660021 - 2¹⁸ = 464397877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (464660051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80591 + ... + 86163.

It is an arithmetic number, because the mean of its divisors is an integer number (34090584).

Almost surely, 2^464660021 is an apocalyptic number.

It is an amenable number.

464660021 is a deficient number, since it is larger than the sum of its proper divisors (80789323).

464660021 is a wasteful number, since it uses less digits than its factorization.

464660021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5900.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 464660021 is about 21555.9741371157. The cubic root of 464660021 is about 774.5422317797.

The spelling of 464660021 in words is "four hundred sixty-four million, six hundred sixty thousand, twenty-one".