747407505 has 32 divisors (see below), whose sum is σ = 1290812544. Its totient is φ = 367105536.

The previous prime is 747407501. The next prime is 747407513. The reversal of 747407505 is 505704747.

It is not a de Polignac number, because 747407505 - 2² = 747407501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (747407501) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 84922 + ... + 93308.

It is an arithmetic number, because the mean of its divisors is an integer number (40337892).

Almost surely, 2^747407505 is an apocalyptic number.

It is an amenable number.

747407505 is a deficient number, since it is larger than the sum of its proper divisors (543405039).

747407505 is a wasteful number, since it uses less digits than its factorization.

747407505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8865.

The product of its (nonzero) digits is 137200, while the sum is 39.

The square root of 747407505 is about 27338.7546351329. The cubic root of 747407505 is about 907.5122265350.

The spelling of 747407505 in words is "seven hundred forty-seven million, four hundred seven thousand, five hundred five".