64037389 has 8 divisors (see below), whose sum is σ = 69064632. Its totient is φ = 59024640.

The previous prime is 64037387. The next prime is 64037399. The reversal of 64037389 is 98373046.

It can be written as a sum of positive squares in 4 ways, for example, as 7155625 + 56881764 = 2675^2 + 7542^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 64037389 - 2¹ = 64037387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64037383) 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 7 ways as a sum of consecutive naturals, for example, 6657 + ... + 13129.

It is an arithmetic number, because the mean of its divisors is an integer number (8633079).

Almost surely, 2^64037389 is an apocalyptic number.

It is an amenable number.

64037389 is a deficient number, since it is larger than the sum of its proper divisors (5027243).

64037389 is a wasteful number, since it uses less digits than its factorization.

64037389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7247.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 64037389 is about 8002.3364713064. The cubic root of 64037389 is about 400.0778785863.

The spelling of 64037389 in words is "sixty-four million, thirty-seven thousand, three hundred eighty-nine".