722840457 has 8 divisors (see below), whose sum is σ = 997021440. Its totient is φ = 465276560.

The previous prime is 722840453. The next prime is 722840471. The reversal of 722840457 is 754048227.

722840457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 722840457 - 2² = 722840453 is a prime.

It is not an unprimeable number, because it can be changed into a prime (722840453) 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, 4154169 + ... + 4154342.

It is an arithmetic number, because the mean of its divisors is an integer number (124627680).

Almost surely, 2^722840457 is an apocalyptic number.

It is an amenable number.

722840457 is a deficient number, since it is larger than the sum of its proper divisors (274180983).

722840457 is a wasteful number, since it uses less digits than its factorization.

722840457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8308543.

The product of its (nonzero) digits is 125440, while the sum is 39.

The square root of 722840457 is about 26885.6924218068. The cubic root of 722840457 is about 897.4580358661.

The spelling of 722840457 in words is "seven hundred twenty-two million, eight hundred forty thousand, four hundred fifty-seven".