64787469 has 8 divisors (see below), whose sum is σ = 86511072. Its totient is φ = 43127760.

The previous prime is 64787467. The next prime is 64787477. The reversal of 64787469 is 96478746.

64787469 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64787469 - 2¹ = 64787467 is a prime.

It is a super-2 number, since 2×64787469² = 8394832278851922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64787467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13554 + ... + 17699.

It is an arithmetic number, because the mean of its divisors is an integer number (10813884).

Almost surely, 2^64787469 is an apocalyptic number.

It is an amenable number.

64787469 is a deficient number, since it is larger than the sum of its proper divisors (21723603).

64787469 is a wasteful number, since it uses less digits than its factorization.

64787469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31947.

The product of its digits is 2032128, while the sum is 51.

The square root of 64787469 is about 8049.0663433718. The cubic root of 64787469 is about 401.6338774410.

It can be divided in two parts, 64787 and 469, that added together give a palindrome (65256).

The spelling of 64787469 in words is "sixty-four million, seven hundred eighty-seven thousand, four hundred sixty-nine".