722661069 has 12 divisors (see below), whose sum is σ = 1043369376. Its totient is φ = 444714192.

The previous prime is 722661061. The next prime is 722661131. The reversal of 722661069 is 960166227.

It is not a de Polignac number, because 722661069 - 2³ = 722661061 is a prime.

It is a super-2 number, since 2×722661069² = 1044478041296445522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722661061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 712177 + ... + 713190.

It is an arithmetic number, because the mean of its divisors is an integer number (86947448).

Almost surely, 2^722661069 is an apocalyptic number.

It is an amenable number.

722661069 is a deficient number, since it is larger than the sum of its proper divisors (320708307).

722661069 is a wasteful number, since it uses less digits than its factorization.

722661069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425396 (or 1425383 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 722661069 is about 26882.3560909382. The cubic root of 722661069 is about 897.3837887205.

The spelling of 722661069 in words is "seven hundred twenty-two million, six hundred sixty-one thousand, sixty-nine".