722653801 has 4 divisors (see below), whose sum is σ = 725207632. Its totient is φ = 720099972.

The previous prime is 722653793. The next prime is 722653831. The reversal of 722653801 is 108356227.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 722653801 - 2³ = 722653793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (722653831) 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, 1276491 + ... + 1277056.

It is an arithmetic number, because the mean of its divisors is an integer number (181301908).

Almost surely, 2^722653801 is an apocalyptic number.

It is an amenable number.

722653801 is a deficient number, since it is larger than the sum of its proper divisors (2553831).

722653801 is a wasteful number, since it uses less digits than its factorization.

722653801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2553830.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 722653801 is about 26882.2209089949. The cubic root of 722653801 is about 897.3807802990.

The spelling of 722653801 in words is "seven hundred twenty-two million, six hundred fifty-three thousand, eight hundred one".