64004629 has 4 divisors (see below), whose sum is σ = 68928076. Its totient is φ = 59081184.

The previous prime is 64004627. The next prime is 64004651. The reversal of 64004629 is 92640046.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92640046 = 2 ⋅46320023.

It can be written as a sum of positive squares in 2 ways, for example, as 6275025 + 57729604 = 2505^2 + 7598^2 .

It is a cyclic number.

It is not a de Polignac number, because 64004629 - 2¹ = 64004627 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64004629.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64004621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2461704 + ... + 2461729.

It is an arithmetic number, because the mean of its divisors is an integer number (17232019).

Almost surely, 2^64004629 is an apocalyptic number.

It is an amenable number.

64004629 is a deficient number, since it is larger than the sum of its proper divisors (4923447).

64004629 is a wasteful number, since it uses less digits than its factorization.

64004629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4923446.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 64004629 is about 8000.2893072688. The cubic root of 64004629 is about 400.0096435175.

The spelling of 64004629 in words is "sixty-four million, four thousand, six hundred twenty-nine".