64934481 has 4 divisors (see below), whose sum is σ = 86579312. Its totient is φ = 43289652.

The previous prime is 64934479. The next prime is 64934501. The reversal of 64934481 is 18443946.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 64934481 - 2¹ = 64934479 is a prime.

It is a super-2 number, since 2×64934481² = 8432973645478722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64934431) 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, 10822411 + ... + 10822416.

It is an arithmetic number, because the mean of its divisors is an integer number (21644828).

Almost surely, 2^64934481 is an apocalyptic number.

It is an amenable number.

64934481 is a deficient number, since it is larger than the sum of its proper divisors (21644831).

64934481 is a wasteful number, since it uses less digits than its factorization.

64934481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21644830.

The product of its digits is 82944, while the sum is 39.

The square root of 64934481 is about 8058.1934079544. The cubic root of 64934481 is about 401.9374361189.

The spelling of 64934481 in words is "sixty-four million, nine hundred thirty-four thousand, four hundred eighty-one".