722807812 has 12 divisors (see below), whose sum is σ = 1294330576. Its totient is φ = 352999080.

The previous prime is 722807809. The next prime is 722807831. The reversal of 722807812 is 218708227.

It is a happy number.

It is a super-2 number, since 2×722807812² = 1044902266176454688, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2101014 + ... + 2101357.

Almost surely, 2^722807812 is an apocalyptic number.

It is an amenable number.

722807812 is a deficient number, since it is larger than the sum of its proper divisors (571522764).

722807812 is a wasteful number, since it uses less digits than its factorization.

722807812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4202418 (or 4202416 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 722807812 is about 26885.0853076571. The cubic root of 722807812 is about 897.4445252966. Note that the first 3 decimals are identical.

The spelling of 722807812 in words is "seven hundred twenty-two million, eight hundred seven thousand, eight hundred twelve".