64949 has 4 divisors (see below), whose sum is σ = 65664. Its totient is φ = 64236.

The previous prime is 64937. The next prime is 64951. The reversal of 64949 is 94946.

Added to its reverse (94946) it gives a triangular number (159895 = T₅₆₅).

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 64949 - 2⁸ = 64693 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64919) 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, 197 + ... + 410.

It is an arithmetic number, because the mean of its divisors is an integer number (16416).

2⁶⁴⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

64949 is a deficient number, since it is larger than the sum of its proper divisors (715).

64949 is a wasteful number, since it uses less digits than its factorization.

64949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714.

The product of its digits is 7776, while the sum is 32.

The square root of 64949 is about 254.8509368239. The cubic root of 64949 is about 40.1967390901.

Adding to 64949 its reverse (94946), we get a triangular number (159895 = T₅₆₅).

The spelling of 64949 in words is "sixty-four thousand, nine hundred forty-nine".