720502147 has 4 divisors (see below), whose sum is σ = 739975216. Its totient is φ = 701029080.

The previous prime is 720502127. The next prime is 720502169. The reversal of 720502147 is 741205027.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-720502147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720502127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9736479 + ... + 9736552.

It is an arithmetic number, because the mean of its divisors is an integer number (184993804).

Almost surely, 2^720502147 is an apocalyptic number.

720502147 is a deficient number, since it is larger than the sum of its proper divisors (19473069).

720502147 is a wasteful number, since it uses less digits than its factorization.

720502147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19473068.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 720502147 is about 26842.1710560081. The cubic root of 720502147 is about 896.4892642195.

The spelling of 720502147 in words is "seven hundred twenty million, five hundred two thousand, one hundred forty-seven".