720650755 has 16 divisors (see below), whose sum is σ = 946453248. Its totient is φ = 522412000.

The previous prime is 720650747. The next prime is 720650761. The reversal of 720650755 is 557056027.

It is not a de Polignac number, because 720650755 - 2³ = 720650747 is a prime.

It is a Duffinian number.

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, 3961 + ... + 38170.

It is an arithmetic number, because the mean of its divisors is an integer number (59153328).

Almost surely, 2^720650755 is an apocalyptic number.

720650755 is a deficient number, since it is larger than the sum of its proper divisors (225802493).

720650755 is a wasteful number, since it uses less digits than its factorization.

720650755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42458.

The product of its (nonzero) digits is 73500, while the sum is 37.

The square root of 720650755 is about 26844.9390947344. The cubic root of 720650755 is about 896.5508954576.

The spelling of 720650755 in words is "seven hundred twenty million, six hundred fifty thousand, seven hundred fifty-five".