720623952 has 50 divisors (see below), whose sum is σ = 2085698538. Its totient is φ = 240207552.

The previous prime is 720623909. The next prime is 720623977. The reversal of 720623952 is 259326027.

720623952 is a `hidden beast` number, since 7 + 20 + 623 + 9 + 5 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 588741696 + 131882256 = 24264^2 + 11484^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 276723 + ... + 279314.

Almost surely, 2^720623952 is an apocalyptic number.

720623952 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

720623952 is an abundant number, since it is smaller than the sum of its proper divisors (1365074586).

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

720623952 is a wasteful number, since it uses less digits than its factorization.

720623952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556057 (or 556042 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 720623952 is about 26844.4398712285. The cubic root of 720623952 is about 896.5397802484.

Adding to 720623952 its reverse (259326027), we get a palindrome (979949979).

The spelling of 720623952 in words is "seven hundred twenty million, six hundred twenty-three thousand, nine hundred fifty-two".