64338469 has 18 divisors (see below), whose sum is σ = 71718066. Its totient is φ = 57676320.

The previous prime is 64338467. The next prime is 64338473. The reversal of 64338469 is 96483346.

It can be written as a sum of positive squares in 3 ways, for example, as 5616900 + 58721569 = 2370^2 + 7663^2 .

It is not a de Polignac number, because 64338469 - 2¹ = 64338467 is a prime.

It is a super-2 number, since 2×64338469² = 8278877186527922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64338467) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 814372 + ... + 814450.

It is an arithmetic number, because the mean of its divisors is an integer number (3984337).

Almost surely, 2^64338469 is an apocalyptic number.

It is an amenable number.

64338469 is a deficient number, since it is larger than the sum of its proper divisors (7379597).

64338469 is an equidigital number, since it uses as much as digits as its factorization.

64338469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 153 counting only the distinct ones).

The product of its digits is 373248, while the sum is 43.

The square root of 64338469 is about 8021.1264171561. The cubic root of 64338469 is about 400.7039043202.

The spelling of 64338469 in words is "sixty-four million, three hundred thirty-eight thousand, four hundred sixty-nine".