722478253 has 8 divisors (see below), whose sum is σ = 827599808. Its totient is φ = 617834304.

The previous prime is 722478241. The next prime is 722478301. The reversal of 722478253 is 352874227.

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 722478253 - 2⁵ = 722478221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722472253) 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, 116151 + ... + 122212.

It is an arithmetic number, because the mean of its divisors is an integer number (103449976).

Almost surely, 2^722478253 is an apocalyptic number.

It is an amenable number.

722478253 is a deficient number, since it is larger than the sum of its proper divisors (105121555).

722478253 is a wasteful number, since it uses less digits than its factorization.

722478253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238803.

The product of its digits is 188160, while the sum is 40.

The square root of 722478253 is about 26878.9555786679. The cubic root of 722478253 is about 897.3081101128.

The spelling of 722478253 in words is "seven hundred twenty-two million, four hundred seventy-eight thousand, two hundred fifty-three".