722066851 has 4 divisors (see below), whose sum is σ = 787709304. Its totient is φ = 656424400.

The previous prime is 722066843. The next prime is 722066869. The reversal of 722066851 is 158660227.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 722066851 - 2³ = 722066843 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 722066851.

It is not an unprimeable number, because it can be changed into a prime (722066831) 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, 32821210 + ... + 32821231.

It is an arithmetic number, because the mean of its divisors is an integer number (196927326).

Almost surely, 2^722066851 is an apocalyptic number.

722066851 is a deficient number, since it is larger than the sum of its proper divisors (65642453).

722066851 is a wasteful number, since it uses less digits than its factorization.

722066851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65642452.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 722066851 is about 26871.3016245957. The cubic root of 722066851 is about 897.1377592216.

The spelling of 722066851 in words is "seven hundred twenty-two million, sixty-six thousand, eight hundred fifty-one".