748706984640 has 448 divisors, whose sum is σ = 2723668416000. Its totient is φ = 193518194688.

The previous prime is 748706984617. The next prime is 748706984659. The reversal of 748706984640 is 46489607847.

748706984640 is a `hidden beast` number, since 7 + 4 + 87 + 0 + 6 + 98 + 464 + 0 = 666.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 37997511 + ... + 38017209.

It is an arithmetic number, because the mean of its divisors is an integer number (6079617000).

Almost surely, 2^748706984640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 748706984640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1361834208000).

748706984640 is an abundant number, since it is smaller than the sum of its proper divisors (1974961431360).

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

748706984640 is a wasteful number, since it uses less digits than its factorization.

748706984640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19861 (or 19845 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 63.

The spelling of 748706984640 in words is "seven hundred forty-eight billion, seven hundred six million, nine hundred eighty-four thousand, six hundred forty".