621632361 has 16 divisors (see below), whose sum is σ = 954712064. Its totient is φ = 352419984.

The previous prime is 621632351. The next prime is 621632377. The reversal of 621632361 is 163236126.

621632361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 621632361 - 2¹⁰ = 621631337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (621632351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113875 + ... + 119208.

It is an arithmetic number, because the mean of its divisors is an integer number (59669504).

Almost surely, 2^621632361 is an apocalyptic number.

It is an amenable number.

621632361 is a deficient number, since it is larger than the sum of its proper divisors (333079703).

621632361 is a wasteful number, since it uses less digits than its factorization.

621632361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233220.

The product of its digits is 7776, while the sum is 30.

The square root of 621632361 is about 24932.5562468031. The cubic root of 621632361 is about 853.4495851786.

Adding to 621632361 its reverse (163236126), we get a palindrome (784868487).

The spelling of 621632361 in words is "six hundred twenty-one million, six hundred thirty-two thousand, three hundred sixty-one".