64474369 has 2 divisors, whose sum is σ = 64474370. Its totient is φ = 64474368.

The previous prime is 64474367. The next prime is 64474373. The reversal of 64474369 is 96347446.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59907600 + 4566769 = 7740^2 + 2137^2 .

It is a cyclic number.

It is not a de Polignac number, because 64474369 - 2¹ = 64474367 is a prime.

It is a super-2 number, since 2×64474369² = 8313888515896322, which contains 22 as substring.

Together with 64474367, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (64474363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32237184 + 32237185.

It is an arithmetic number, because the mean of its divisors is an integer number (32237185).

Almost surely, 2^64474369 is an apocalyptic number.

It is an amenable number.

64474369 is a deficient number, since it is larger than the sum of its proper divisors (1).

64474369 is an equidigital number, since it uses as much as digits as its factorization.

64474369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 43.

The square root of 64474369 is about 8029.5933271866. The cubic root of 64474369 is about 400.9858370671.

It can be divided in two parts, 6447 and 4369, that added together give a square (10816 = 104²).

The spelling of 64474369 in words is "sixty-four million, four hundred seventy-four thousand, three hundred sixty-nine".