747752645 has 4 divisors (see below), whose sum is σ = 897303180. Its totient is φ = 598202112.

The previous prime is 747752641. The next prime is 747752653. The reversal of 747752645 is 546257747.

747752645 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 369177796 + 378574849 = 19214^2 + 19457^2 .

It is a cyclic number.

It is not a de Polignac number, because 747752645 - 2² = 747752641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 747752645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747752641) 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, 74775260 + ... + 74775269.

It is an arithmetic number, because the mean of its divisors is an integer number (224325795).

Almost surely, 2^747752645 is an apocalyptic number.

It is an amenable number.

747752645 is a deficient number, since it is larger than the sum of its proper divisors (149550535).

747752645 is a wasteful number, since it uses less digits than its factorization.

747752645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149550534.

The product of its digits is 1646400, while the sum is 47.

The square root of 747752645 is about 27345.0661911797. The cubic root of 747752645 is about 907.6518962454.

The spelling of 747752645 in words is "seven hundred forty-seven million, seven hundred fifty-two thousand, six hundred forty-five".