747907776 has 504 divisors, whose sum is σ = 2849849520. Its totient is φ = 191600640.

The previous prime is 747907759. The next prime is 747907781. The reversal of 747907776 is 677709747.

It is a tau number, because it is divible by the number of its divisors (504).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 10245276 + ... + 10245348.

Almost surely, 2^747907776 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 747907776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1424924760).

747907776 is an abundant number, since it is smaller than the sum of its proper divisors (2101941744).

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

747907776 is a wasteful number, since it uses less digits than its factorization.

747907776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 3630312, while the sum is 54.

The square root of 747907776 is about 27347.9025886813. The cubic root of 747907776 is about 907.7146599642.

The spelling of 747907776 in words is "seven hundred forty-seven million, nine hundred seven thousand, seven hundred seventy-six".