747306945 has 256 divisors, whose sum is σ = 1786060800. Its totient is φ = 287400960.

The previous prime is 747306941. The next prime is 747306953. The reversal of 747306945 is 549603747.

It is not a de Polignac number, because 747306945 - 2² = 747306941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 747306945.

It is not an unprimeable number, because it can be changed into a prime (747306941) 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 255 ways as a sum of consecutive naturals, for example, 11153802 + ... + 11153868.

It is an arithmetic number, because the mean of its divisors is an integer number (6976800).

Almost surely, 2^747306945 is an apocalyptic number.

It is an amenable number.

747306945 is an abundant number, since it is smaller than the sum of its proper divisors (1038753855).

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

747306945 is a wasteful number, since it uses less digits than its factorization.

747306945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The square root of 747306945 is about 27336.9154258486. The cubic root of 747306945 is about 907.4715242755.

The spelling of 747306945 in words is "seven hundred forty-seven million, three hundred six thousand, nine hundred forty-five".