720577066 has 16 divisors (see below), whose sum is σ = 1182300768. Its totient is φ = 326653200.

The previous prime is 720577063. The next prime is 720577073. The reversal of 720577066 is 660775027.

It is not an unprimeable number, because it can be changed into a prime (720577061) 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, 35700 + ... + 52111.

It is an arithmetic number, because the mean of its divisors is an integer number (73893798).

Almost surely, 2^720577066 is an apocalyptic number.

720577066 is a deficient number, since it is larger than the sum of its proper divisors (461723702).

720577066 is a wasteful number, since it uses less digits than its factorization.

720577066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88197.

The product of its (nonzero) digits is 123480, while the sum is 40.

The square root of 720577066 is about 26843.5665663116. The cubic root of 720577066 is about 896.5203359526.

The spelling of 720577066 in words is "seven hundred twenty million, five hundred seventy-seven thousand, sixty-six".