720532771 has 8 divisors (see below), whose sum is σ = 829391360. Its totient is φ = 613155528.

The previous prime is 720532759. The next prime is 720532831. The reversal of 720532771 is 177235027.

It is a happy number.

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 720532771 - 2⁷ = 720532643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (720532751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369291 + ... + 371236.

It is an arithmetic number, because the mean of its divisors is an integer number (103673920).

Almost surely, 2^720532771 is an apocalyptic number.

720532771 is a deficient number, since it is larger than the sum of its proper divisors (108858589).

720532771 is a wasteful number, since it uses less digits than its factorization.

720532771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740673.

The product of its (nonzero) digits is 20580, while the sum is 34.

The square root of 720532771 is about 26842.7414956073. The cubic root of 720532771 is about 896.5019654068.

Adding to 720532771 its reverse (177235027), we get a palindrome (897767798).

The spelling of 720532771 in words is "seven hundred twenty million, five hundred thirty-two thousand, seven hundred seventy-one".