64616147 has 4 divisors (see below), whose sum is σ = 66844320. Its totient is φ = 62387976.

The previous prime is 64616137. The next prime is 64616161. The reversal of 64616147 is 74161646.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64616147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64616107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1114043 + ... + 1114100.

It is an arithmetic number, because the mean of its divisors is an integer number (16711080).

Almost surely, 2^64616147 is an apocalyptic number.

64616147 is a deficient number, since it is larger than the sum of its proper divisors (2228173).

64616147 is a wasteful number, since it uses less digits than its factorization.

64616147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2228172.

The product of its digits is 24192, while the sum is 35.

The square root of 64616147 is about 8038.4169461406. The cubic root of 64616147 is about 401.2795421487.

The spelling of 64616147 in words is "sixty-four million, six hundred sixteen thousand, one hundred forty-seven".