745020755 has 16 divisors (see below), whose sum is σ = 910656000. Its totient is φ = 584972160.

The previous prime is 745020751. The next prime is 745020779. The reversal of 745020755 is 557020547.

It is a happy number.

It is not a de Polignac number, because 745020755 - 2² = 745020751 is a prime.

It is not an unprimeable number, because it can be changed into a prime (745020751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152846 + ... + 157644.

It is an arithmetic number, because the mean of its divisors is an integer number (56916000).

Almost surely, 2^745020755 is an apocalyptic number.

745020755 is a deficient number, since it is larger than the sum of its proper divisors (165635245).

745020755 is a wasteful number, since it uses less digits than its factorization.

745020755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5374.

The product of its (nonzero) digits is 49000, while the sum is 35.

The square root of 745020755 is about 27295.0683274470. The cubic root of 745020755 is about 906.5451884686.

The spelling of 745020755 in words is "seven hundred forty-five million, twenty thousand, seven hundred fifty-five".