747640045 has 8 divisors (see below), whose sum is σ = 916257024. Its totient is φ = 585386064.

The previous prime is 747640031. The next prime is 747640111. The reversal of 747640045 is 540046747.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 747640045 - 2¹³ = 747631853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 747639986 and 747640013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1590489 + ... + 1590958.

It is an arithmetic number, because the mean of its divisors is an integer number (114532128).

Almost surely, 2^747640045 is an apocalyptic number.

It is an amenable number.

747640045 is a deficient number, since it is larger than the sum of its proper divisors (168616979).

747640045 is a wasteful number, since it uses less digits than its factorization.

747640045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3181499.

The product of its (nonzero) digits is 94080, while the sum is 37.

The square root of 747640045 is about 27343.0072413405. The cubic root of 747640045 is about 907.6063345058.

The spelling of 747640045 in words is "seven hundred forty-seven million, six hundred forty thousand, forty-five".