64037705 has 4 divisors (see below), whose sum is σ = 76845252. Its totient is φ = 51230160.

The previous prime is 64037683. The next prime is 64037711. The reversal of 64037705 is 50773046.

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 10220809 + 53816896 = 3197^2 + 7336^2 .

It is not a de Polignac number, because 64037705 - 2¹⁶ = 63972169 is a prime.

It is a Duffinian number.

It is a Curzon 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, 6403766 + ... + 6403775.

It is an arithmetic number, because the mean of its divisors is an integer number (19211313).

Almost surely, 2^64037705 is an apocalyptic number.

It is an amenable number.

64037705 is a deficient number, since it is larger than the sum of its proper divisors (12807547).

64037705 is a wasteful number, since it uses less digits than its factorization.

64037705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12807546.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 64037705 is about 8002.3562155155. The cubic root of 64037705 is about 400.0785366623.

The spelling of 64037705 in words is "sixty-four million, thirty-seven thousand, seven hundred five".