722605554 has 48 divisors (see below), whose sum is σ = 1714452480. Its totient is φ = 218141280.

The previous prime is 722605537. The next prime is 722605571. The reversal of 722605554 is 455506227.

It is an interprime number because it is at equal distance from previous prime (722605537) and next prime (722605571).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46479 + ... + 60045.

It is an arithmetic number, because the mean of its divisors is an integer number (35717760).

Almost surely, 2^722605554 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722605554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (857226240).

722605554 is an abundant number, since it is smaller than the sum of its proper divisors (991846926).

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

722605554 is a wasteful number, since it uses less digits than its factorization.

722605554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13855 (or 13852 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 36.

The square root of 722605554 is about 26881.3235165235. The cubic root of 722605554 is about 897.3608090514.

The spelling of 722605554 in words is "seven hundred twenty-two million, six hundred five thousand, five hundred fifty-four".