747580638 has 64 divisors (see below), whose sum is σ = 1788272640. Its totient is φ = 203709792.

The previous prime is 747580633. The next prime is 747580657. The reversal of 747580638 is 836085747.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747580633) 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 31 ways as a sum of consecutive naturals, for example, 403831 + ... + 405677.

It is an arithmetic number, because the mean of its divisors is an integer number (27941760).

Almost surely, 2^747580638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 747580638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (894136320).

747580638 is an abundant number, since it is smaller than the sum of its proper divisors (1040692002).

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

747580638 is a wasteful number, since it uses less digits than its factorization.

747580638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2301.

The product of its (nonzero) digits is 1128960, while the sum is 48.

The square root of 747580638 is about 27341.9208908226. The cubic root of 747580638 is about 907.5822945960.

The spelling of 747580638 in words is "seven hundred forty-seven million, five hundred eighty thousand, six hundred thirty-eight".