64821463 has 6 divisors (see below), whose sum is σ = 75404616. Its totient is φ = 55561212.

The previous prime is 64821457. The next prime is 64821487. The reversal of 64821463 is 36412846.

It is not a de Polignac number, because 64821463 - 2¹⁷ = 64690391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64821443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 661395 + ... + 661492.

It is an arithmetic number, because the mean of its divisors is an integer number (12567436).

Almost surely, 2^64821463 is an apocalyptic number.

64821463 is a deficient number, since it is larger than the sum of its proper divisors (10583153).

64821463 is a wasteful number, since it uses less digits than its factorization.

64821463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322901 (or 1322894 counting only the distinct ones).

The product of its digits is 27648, while the sum is 34.

The square root of 64821463 is about 8051.1777399335. The cubic root of 64821463 is about 401.7041109548.

The spelling of 64821463 in words is "sixty-four million, eight hundred twenty-one thousand, four hundred sixty-three".