64545797 has 16 divisors (see below), whose sum is σ = 70187520. Its totient is φ = 59190912.

The previous prime is 64545773. The next prime is 64545799. The reversal of 64545797 is 79754546.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64545797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64545799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61604 + ... + 62642.

It is an arithmetic number, because the mean of its divisors is an integer number (4386720).

Almost surely, 2^64545797 is an apocalyptic number.

It is an amenable number.

64545797 is a deficient number, since it is larger than the sum of its proper divisors (5641723).

64545797 is a wasteful number, since it uses less digits than its factorization.

64545797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172.

The product of its digits is 1058400, while the sum is 47.

The square root of 64545797 is about 8034.0398928559. The cubic root of 64545797 is about 401.1338599504.

The spelling of 64545797 in words is "sixty-four million, five hundred forty-five thousand, seven hundred ninety-seven".