64541949 has 8 divisors (see below), whose sum is σ = 88381920. Its totient is φ = 41864976.

The previous prime is 64541947. The next prime is 64541959. The reversal of 64541949 is 94914546.

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

It is not a de Polignac number, because 64541949 - 2¹ = 64541947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64541949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64541947) 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 7 ways as a sum of consecutive naturals, for example, 290619 + ... + 290840.

It is an arithmetic number, because the mean of its divisors is an integer number (11047740).

Almost surely, 2^64541949 is an apocalyptic number.

It is an amenable number.

64541949 is a deficient number, since it is larger than the sum of its proper divisors (23839971).

64541949 is a wasteful number, since it uses less digits than its factorization.

64541949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581499.

The product of its digits is 155520, while the sum is 42.

The square root of 64541949 is about 8033.8004082750. The cubic root of 64541949 is about 401.1258883817.

The spelling of 64541949 in words is "sixty-four million, five hundred forty-one thousand, nine hundred forty-nine".