722765223936 has 1920 divisors, whose sum is σ = 2876883609600. Its totient is φ = 175814737920.

The previous prime is 722765223931. The next prime is 722765223949. The reversal of 722765223936 is 639322567227.

It is a happy number.

722765223936 is a `hidden beast` number, since 7 + 2 + 27 + 6 + 522 + 3 + 93 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722765223931) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 15377983465 + ... + 15377983511.

It is an arithmetic number, because the mean of its divisors is an integer number (1498376880).

Almost surely, 2^722765223936 is an apocalyptic number.

722765223936 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722765223936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1438441804800).

722765223936 is an abundant number, since it is smaller than the sum of its proper divisors (2154118385664).

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

722765223936 is a wasteful number, since it uses less digits than its factorization.

722765223936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165 (or 136 counting only the distinct ones).

The product of its digits is 11430720, while the sum is 54.

The spelling of 722765223936 in words is "seven hundred twenty-two billion, seven hundred sixty-five million, two hundred twenty-three thousand, nine hundred thirty-six".