720422647 has 12 divisors (see below), whose sum is σ = 838627776. Its totient is φ = 617074080.

The previous prime is 720422641. The next prime is 720422701. The reversal of 720422647 is 746224027.

It is not a de Polignac number, because 720422647 - 2⁷ = 720422519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720422641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80058 + ... + 88600.

It is an arithmetic number, because the mean of its divisors is an integer number (69885648).

Almost surely, 2^720422647 is an apocalyptic number.

720422647 is a deficient number, since it is larger than the sum of its proper divisors (118205129).

720422647 is a wasteful number, since it uses less digits than its factorization.

720422647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10278 (or 10271 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 34.

The square root of 720422647 is about 26840.6901364328. The cubic root of 720422647 is about 896.4562902173.

The spelling of 720422647 in words is "seven hundred twenty million, four hundred twenty-two thousand, six hundred forty-seven".