622687801 has 4 divisors (see below), whose sum is σ = 623047204. Its totient is φ = 622328400.

The previous prime is 622687789. The next prime is 622687841. The reversal of 622687801 is 108786226.

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

It can be written as a sum of positive squares in 2 ways, for example, as 140446201 + 482241600 = 11851^2 + 21960^2 .

It is a cyclic number.

It is not a de Polignac number, because 622687801 - 2¹¹ = 622685753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (622687841) 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, 177090 + ... + 180571.

It is an arithmetic number, because the mean of its divisors is an integer number (155761801).

Almost surely, 2^622687801 is an apocalyptic number.

It is an amenable number.

622687801 is a deficient number, since it is larger than the sum of its proper divisors (359403).

622687801 is a wasteful number, since it uses less digits than its factorization.

622687801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359402.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 622687801 is about 24953.7131705885. The cubic root of 622687801 is about 853.9323225533.

The spelling of 622687801 in words is "six hundred twenty-two million, six hundred eighty-seven thousand, eight hundred one".