722574730446621 has 8 divisors (see below), whose sum is σ = 1037543202692640. Its totient is φ = 444661372582512.

The previous prime is 722574730446463. The next prime is 722574730446641. The reversal of 722574730446621 is 126644037475227.

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

It is not a de Polignac number, because 722574730446621 - 2¹⁰ = 722574730445597 is a prime.

It is a super-2 number, since 2×722574730446621² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722574730446641) 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, 9263778595431 + ... + 9263778595508.

It is an arithmetic number, because the mean of its divisors is an integer number (129692900336580).

Almost surely, 2^{722574730446621} is an apocalyptic number.

It is an amenable number.

722574730446621 is a deficient number, since it is larger than the sum of its proper divisors (314968472246019).

722574730446621 is a wasteful number, since it uses less digits than its factorization.

722574730446621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18527557190955.

The product of its (nonzero) digits is 94832640, while the sum is 60.

The spelling of 722574730446621 in words is "seven hundred twenty-two trillion, five hundred seventy-four billion, seven hundred thirty million, four hundred forty-six thousand, six hundred twenty-one".