64484751 has 4 divisors (see below), whose sum is σ = 85979672. Its totient is φ = 42989832.

The previous prime is 64484731. The next prime is 64484773. The reversal of 64484751 is 15748446.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 64484751 - 2⁹ = 64484239 is a prime.

It is a super-2 number, since 2×64484751² = 8316566223064002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64484711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10747456 + ... + 10747461.

It is an arithmetic number, because the mean of its divisors is an integer number (21494918).

Almost surely, 2^64484751 is an apocalyptic number.

64484751 is a deficient number, since it is larger than the sum of its proper divisors (21494921).

64484751 is a wasteful number, since it uses less digits than its factorization.

64484751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21494920.

The product of its digits is 107520, while the sum is 39.

The square root of 64484751 is about 8030.2397847138. The cubic root of 64484751 is about 401.0073588573.

The spelling of 64484751 in words is "sixty-four million, four hundred eighty-four thousand, seven hundred fifty-one".