64705137 has 12 divisors (see below), whose sum is σ = 100359216. Its totient is φ = 36974280.

The previous prime is 64705133. The next prime is 64705139. The reversal of 64705137 is 73150746.

It is not a de Polignac number, because 64705137 - 2² = 64705133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64705098 and 64705107.

It is not an unprimeable number, because it can be changed into a prime (64705133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 219939 + ... + 220232.

It is an arithmetic number, because the mean of its divisors is an integer number (8363268).

Almost surely, 2^64705137 is an apocalyptic number.

It is an amenable number.

64705137 is a deficient number, since it is larger than the sum of its proper divisors (35654079).

64705137 is a wasteful number, since it uses less digits than its factorization.

64705137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440188 (or 440181 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 64705137 is about 8043.9503355006. The cubic root of 64705137 is about 401.4636730371.

The spelling of 64705137 in words is "sixty-four million, seven hundred five thousand, one hundred thirty-seven".