720748801 has 4 divisors (see below), whose sum is σ = 722421504. Its totient is φ = 719076100.

The previous prime is 720748771. The next prime is 720748811. The reversal of 720748801 is 108847027.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 108847027 = 1289 ⋅84443.

It is a cyclic number.

It is not a de Polignac number, because 720748801 - 2¹³ = 720740609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720748811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 835705 + ... + 836566.

It is an arithmetic number, because the mean of its divisors is an integer number (180605376).

Almost surely, 2^720748801 is an apocalyptic number.

It is an amenable number.

720748801 is a deficient number, since it is larger than the sum of its proper divisors (1672703).

720748801 is a wasteful number, since it uses less digits than its factorization.

720748801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1672702.

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 720748801 is about 26846.7651868898. The cubic root of 720748801 is about 896.5915528043.

The spelling of 720748801 in words is "seven hundred twenty million, seven hundred forty-eight thousand, eight hundred one".