64399346 has 24 divisors (see below), whose sum is σ = 108204012. Its totient is φ = 28714400.

The previous prime is 64399331. The next prime is 64399381.

64399346 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 56776225 + 7623121 = 7535^2 + 2761^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64399297 and 64399306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10316 + ... + 15336.

Almost surely, 2^64399346 is an apocalyptic number.

64399346 is a deficient number, since it is larger than the sum of its proper divisors (43804666).

64399346 is a wasteful number, since it uses less digits than its factorization.

64399346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5098 (or 5087 counting only the distinct ones).

The product of its digits is 419904, while the sum is 44.

The square root of 64399346 is about 8024.9203111308. The cubic root of 64399346 is about 400.8302463685.

The spelling of 64399346 in words is "sixty-four million, three hundred ninety-nine thousand, three hundred forty-six".