64149 has 4 divisors (see below), whose sum is σ = 85536. Its totient is φ = 42764.

The previous prime is 64123. The next prime is 64151. The reversal of 64149 is 94146.

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-64149 is a prime.

It is a D-number.

It is a nialpdrome in base 4 and base 16.

It is a zygodrome in base 4.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 64149.

It is not an unprimeable number, because it can be changed into a prime (64109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10689 + ... + 10694.

It is an arithmetic number, because the mean of its divisors is an integer number (21384).

2⁶⁴¹⁴⁹ is an apocalyptic number.

It is an amenable number.

64149 is a deficient number, since it is larger than the sum of its proper divisors (21387).

64149 is a wasteful number, since it uses less digits than its factorization.

64149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21386.

The product of its digits is 864, while the sum is 24.

The square root of 64149 is about 253.2765287191. The cubic root of 64149 is about 40.0310176081.

The spelling of 64149 in words is "sixty-four thousand, one hundred forty-nine".