621622002 has 16 divisors (see below), whose sum is σ = 1251479232. Its totient is φ = 205834800.

The previous prime is 621621997. The next prime is 621622003. The reversal of 621622002 is 200226126.

It is a self number, because there is not a number n which added to its sum of digits gives 621622002.

It is not an unprimeable number, because it can be changed into a prime (621622003) 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, 342153 + ... + 343964.

It is an arithmetic number, because the mean of its divisors is an integer number (78217452).

Almost surely, 2^621622002 is an apocalyptic number.

621622002 is an abundant number, since it is smaller than the sum of its proper divisors (629857230).

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

621622002 is a wasteful number, since it uses less digits than its factorization.

621622002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686273.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 621622002 is about 24932.3485055059. The cubic root of 621622002 is about 853.4448444701. Note that the first 3 decimals are identical.

Adding to 621622002 its reverse (200226126), we get a palindrome (821848128).

The spelling of 621622002 in words is "six hundred twenty-one million, six hundred twenty-two thousand, two".