64659149 has 4 divisors (see below), whose sum is σ = 66744960. Its totient is φ = 62573340.

The previous prime is 64659083. The next prime is 64659157. The reversal of 64659149 is 94195646.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64659149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64659349) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1042859 + ... + 1042920.

It is an arithmetic number, because the mean of its divisors is an integer number (16686240).

Almost surely, 2^64659149 is an apocalyptic number.

It is an amenable number.

64659149 is a deficient number, since it is larger than the sum of its proper divisors (2085811).

64659149 is a wasteful number, since it uses less digits than its factorization.

64659149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085810.

The product of its digits is 233280, while the sum is 44.

The square root of 64659149 is about 8041.0912816607. The cubic root of 64659149 is about 401.3685394926.

It can be divided in two parts, 646 and 59149, that added together give a palindrome (59795).

The spelling of 64659149 in words is "sixty-four million, six hundred fifty-nine thousand, one hundred forty-nine".