64946005 has 4 divisors (see below), whose sum is σ = 77935212. Its totient is φ = 51956800.

The previous prime is 64945987. The next prime is 64946027. The reversal of 64946005 is 50064946.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22448644 + 42497361 = 4738^2 + 6519^2 .

It is not a de Polignac number, because 64946005 - 2¹⁷ = 64814933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6494596 + ... + 6494605.

It is an arithmetic number, because the mean of its divisors is an integer number (19483803).

Almost surely, 2^64946005 is an apocalyptic number.

It is an amenable number.

64946005 is a deficient number, since it is larger than the sum of its proper divisors (12989207).

64946005 is a wasteful number, since it uses less digits than its factorization.

64946005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12989206.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 64946005 is about 8058.9084248427. The cubic root of 64946005 is about 401.9612121516.

The spelling of 64946005 in words is "sixty-four million, nine hundred forty-six thousand, five".