720623502 has 24 divisors (see below), whose sum is σ = 1563550560. Its totient is φ = 239869440.

The previous prime is 720623473. The next prime is 720623509. The reversal of 720623502 is 205326027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720623509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14899 + ... + 40782.

It is an arithmetic number, because the mean of its divisors is an integer number (65147940).

Almost surely, 2^720623502 is an apocalyptic number.

720623502 is an abundant number, since it is smaller than the sum of its proper divisors (842927058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

720623502 is a wasteful number, since it uses less digits than its factorization.

720623502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56408 (or 56405 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 720623502 is about 26844.4314896032. The cubic root of 720623502 is about 896.5395936310.

Adding to 720623502 its reverse (205326027), we get a palindrome (925949529).

The spelling of 720623502 in words is "seven hundred twenty million, six hundred twenty-three thousand, five hundred two".