720987038 has 16 divisors (see below), whose sum is σ = 1120560480. Its totient is φ = 347506656.

The previous prime is 720987031. The next prime is 720987061. The reversal of 720987038 is 830789027.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 720987038.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720987031) 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, 27920 + ... + 47132.

It is an arithmetic number, because the mean of its divisors is an integer number (70035030).

Almost surely, 2^720987038 is an apocalyptic number.

720987038 is a deficient number, since it is larger than the sum of its proper divisors (399573442).

720987038 is a wasteful number, since it uses less digits than its factorization.

720987038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19891.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 720987038 is about 26851.2017980574. The cubic root of 720987038 is about 896.6903286659.

The spelling of 720987038 in words is "seven hundred twenty million, nine hundred eighty-seven thousand, thirty-eight".