747646746 has 64 divisors (see below), whose sum is σ = 1872737280. Its totient is φ = 193311360.

The previous prime is 747646727. The next prime is 747646777. The reversal of 747646746 is 647646747.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101310 + ... + 108438.

It is an arithmetic number, because the mean of its divisors is an integer number (29261520).

Almost surely, 2^747646746 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 747646746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (936368640).

747646746 is an abundant number, since it is smaller than the sum of its proper divisors (1125090534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

747646746 is a wasteful number, since it uses less digits than its factorization.

747646746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7379.

The product of its digits is 4741632, while the sum is 51.

The square root of 747646746 is about 27343.1297769659. The cubic root of 747646746 is about 907.6090460833.

Subtracting from 747646746 its reverse (647646747), we obtain a palindrome (99999999).

The spelling of 747646746 in words is "seven hundred forty-seven million, six hundred forty-six thousand, seven hundred forty-six".