747984305638 has 16 divisors (see below), whose sum is σ = 1126797970320. Its totient is φ = 372385440000.

The previous prime is 747984305611. The next prime is 747984305639. The reversal of 747984305638 is 836503489747.

It is a super-3 number, since 3×747984305638³ (a number of 37 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 747984305638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747984305639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3263653 + ... + 3485311.

It is an arithmetic number, because the mean of its divisors is an integer number (70424873145).

Almost surely, 2^747984305638 is an apocalyptic number.

747984305638 is a deficient number, since it is larger than the sum of its proper divisors (378813664682).

747984305638 is a wasteful number, since it uses less digits than its factorization.

747984305638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228903.

The product of its (nonzero) digits is 121927680, while the sum is 64.

The spelling of 747984305638 in words is "seven hundred forty-seven billion, nine hundred eighty-four million, three hundred five thousand, six hundred thirty-eight".