621104263 has 8 divisors (see below), whose sum is σ = 669141648. Its totient is φ = 573104064.

The previous prime is 621104233. The next prime is 621104279. The reversal of 621104263 is 362401126.

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

It is not a de Polignac number, because 621104263 - 2⁹ = 621103751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621104233) 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, 32331 + ... + 47827.

It is an arithmetic number, because the mean of its divisors is an integer number (83642706).

Almost surely, 2^621104263 is an apocalyptic number.

621104263 is a deficient number, since it is larger than the sum of its proper divisors (48037385).

621104263 is a wasteful number, since it uses less digits than its factorization.

621104263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18593.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 621104263 is about 24921.9634659872. The cubic root of 621104263 is about 853.2078384821.

Adding to 621104263 its reverse (362401126), we get a palindrome (983505389).

The spelling of 621104263 in words is "six hundred twenty-one million, one hundred four thousand, two hundred sixty-three".