622721801 has 8 divisors (see below), whose sum is σ = 670824000. Its totient is φ = 574648272.

The previous prime is 622721797. The next prime is 622721821. The reversal of 622721801 is 108127226.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 622721801 - 2² = 622721797 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (622721821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64700 + ... + 73698.

It is an arithmetic number, because the mean of its divisors is an integer number (83853000).

Almost surely, 2^622721801 is an apocalyptic number.

It is an amenable number.

622721801 is a deficient number, since it is larger than the sum of its proper divisors (48102199).

622721801 is a wasteful number, since it uses less digits than its factorization.

622721801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14335.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 622721801 is about 24954.3944226262. The cubic root of 622721801 is about 853.9478644083.

The spelling of 622721801 in words is "six hundred twenty-two million, seven hundred twenty-one thousand, eight hundred one".