64949905 has 8 divisors (see below), whose sum is σ = 78003072. Its totient is φ = 51917808.

The previous prime is 64949903. The next prime is 64949957. The reversal of 64949905 is 50994946.

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 64949905 - 2¹ = 64949903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64949903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2584 + ... + 11686.

It is an arithmetic number, because the mean of its divisors is an integer number (9750384).

Almost surely, 2^64949905 is an apocalyptic number.

It is an amenable number.

64949905 is a deficient number, since it is larger than the sum of its proper divisors (13053167).

64949905 is a wasteful number, since it uses less digits than its factorization.

64949905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10535.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 64949905 is about 8059.1503894641. The cubic root of 64949905 is about 401.9692578985.

The spelling of 64949905 in words is "sixty-four million, nine hundred forty-nine thousand, nine hundred five".