720535755 has 16 divisors (see below), whose sum is σ = 1170065664. Its totient is φ = 378549600.

The previous prime is 720535741. The next prime is 720535771. The reversal of 720535755 is 557535027.

It is not a de Polignac number, because 720535755 - 2¹⁷ = 720404683 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 357471 + ... + 359480.

It is an arithmetic number, because the mean of its divisors is an integer number (73129104).

Almost surely, 2^720535755 is an apocalyptic number.

720535755 is a deficient number, since it is larger than the sum of its proper divisors (449529909).

720535755 is a wasteful number, since it uses less digits than its factorization.

720535755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717026.

The product of its (nonzero) digits is 183750, while the sum is 39.

The square root of 720535755 is about 26842.7970785460. The cubic root of 720535755 is about 896.5032029902.

The spelling of 720535755 in words is "seven hundred twenty million, five hundred thirty-five thousand, seven hundred fifty-five".