722002993 has 4 divisors (see below), whose sum is σ = 724609780. Its totient is φ = 719396208.

The previous prime is 722002979. The next prime is 722003017. The reversal of 722002993 is 399200227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 399200227 = 607 ⋅657661.

It can be written as a sum of positive squares in 2 ways, for example, as 117679104 + 604323889 = 10848^2 + 24583^2 .

It is a cyclic number.

It is not a de Polignac number, because 722002993 - 2⁵ = 722002961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (722002933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1302978 + ... + 1303531.

It is an arithmetic number, because the mean of its divisors is an integer number (181152445).

Almost surely, 2^722002993 is an apocalyptic number.

It is an amenable number.

722002993 is a deficient number, since it is larger than the sum of its proper divisors (2606787).

722002993 is a wasteful number, since it uses less digits than its factorization.

722002993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2606786.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 722002993 is about 26870.1133789941. The cubic root of 722002993 is about 897.1113114803. Note that the first 3 decimals are identical.

The spelling of 722002993 in words is "seven hundred twenty-two million, two thousand, nine hundred ninety-three".