747216663 has 16 divisors (see below), whose sum is σ = 1040939520. Its totient is φ = 475874784.

The previous prime is 747216661. The next prime is 747216671. The reversal of 747216663 is 366612747.

It is a happy number.

It is not a de Polignac number, because 747216663 - 2¹ = 747216661 is a prime.

It is a super-3 number, since 3×747216663³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747216661) 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, 50670 + ... + 63732.

It is an arithmetic number, because the mean of its divisors is an integer number (65058720).

Almost surely, 2^747216663 is an apocalyptic number.

747216663 is a deficient number, since it is larger than the sum of its proper divisors (293722857).

747216663 is a wasteful number, since it uses less digits than its factorization.

747216663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13918.

The product of its digits is 254016, while the sum is 42.

The square root of 747216663 is about 27335.2640923771. The cubic root of 747216663 is about 907.4349789871.

The spelling of 747216663 in words is "seven hundred forty-seven million, two hundred sixteen thousand, six hundred sixty-three".