915065663 has 4 divisors (see below), whose sum is σ = 918189048. Its totient is φ = 911942280.

The previous prime is 915065659. The next prime is 915065677. The reversal of 915065663 is 366560519.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366560519 = 13 ⋅28196963.

It is a cyclic number.

It is not a de Polignac number, because 915065663 - 2² = 915065659 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 915065663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (915067663) 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, 1561253 + ... + 1561838.

It is an arithmetic number, because the mean of its divisors is an integer number (229547262).

Almost surely, 2^915065663 is an apocalyptic number.

915065663 is a deficient number, since it is larger than the sum of its proper divisors (3123385).

915065663 is a wasteful number, since it uses less digits than its factorization.

915065663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3123384.

The product of its (nonzero) digits is 145800, while the sum is 41.

The square root of 915065663 is about 30250.0522809466. The cubic root of 915065663 is about 970.8469108201.

The spelling of 915065663 in words is "nine hundred fifteen million, sixty-five thousand, six hundred sixty-three".