747777748 has 12 divisors (see below), whose sum is σ = 1365507360. Its totient is φ = 357632792.

The previous prime is 747777727. The next prime is 747777749. The reversal of 747777748 is 847777747.

It is a junction number, because it is equal to n+sod(n) for n = 747777692 and 747777701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747777749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4063918 + ... + 4064101.

It is an arithmetic number, because the mean of its divisors is an integer number (113792280).

Almost surely, 2^747777748 is an apocalyptic number.

It is an amenable number.

747777748 is a deficient number, since it is larger than the sum of its proper divisors (617729612).

747777748 is a wasteful number, since it uses less digits than its factorization.

747777748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8128046 (or 8128044 counting only the distinct ones).

The product of its digits is 15059072, while the sum is 58.

The square root of 747777748 is about 27345.5251915190. The cubic root of 747777748 is about 907.6620531383.

Subtracting 747777748 from its reverse (847777747), we obtain a palindrome (99999999).

The spelling of 747777748 in words is "seven hundred forty-seven million, seven hundred seventy-seven thousand, seven hundred forty-eight".