721206268 has 12 divisors (see below), whose sum is σ = 1262299192. Its totient is φ = 360549360.

The previous prime is 721206263. The next prime is 721206281. The reversal of 721206268 is 862602127.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721206263) 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, 44071 + ... + 58177.

Almost surely, 2^721206268 is an apocalyptic number.

It is an amenable number.

721206268 is a deficient number, since it is larger than the sum of its proper divisors (541092924).

721206268 is a wasteful number, since it uses less digits than its factorization.

721206268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26892 (or 26890 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 721206268 is about 26855.2838003995. The cubic root of 721206268 is about 896.7812047792.

The spelling of 721206268 in words is "seven hundred twenty-one million, two hundred six thousand, two hundred sixty-eight".