748317681 has 6 divisors (see below), whose sum is σ = 1080903330. Its totient is φ = 498878448.

The previous prime is 748317667. The next prime is 748317697. The reversal of 748317681 is 186713847.

It can be written as a sum of positive squares in only one way, i.e., 720439281 + 27878400 = 26841^2 + 5280^2 .

It is not a de Polignac number, because 748317681 - 2⁶ = 748317617 is a prime.

It is a super-2 number, since 2×748317681² = 1119958703394435522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (748317631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41573196 + ... + 41573213.

It is an arithmetic number, because the mean of its divisors is an integer number (180150555).

Almost surely, 2^748317681 is an apocalyptic number.

It is an amenable number.

748317681 is a deficient number, since it is larger than the sum of its proper divisors (332585649).

748317681 is a wasteful number, since it uses less digits than its factorization.

748317681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83146415 (or 83146412 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 748317681 is about 27355.3958297079. The cubic root of 748317681 is about 907.8804597395.

The spelling of 748317681 in words is "seven hundred forty-eight million, three hundred seventeen thousand, six hundred eighty-one".