621463603 has 8 divisors (see below), whose sum is σ = 645764096. Its totient is φ = 597429000.

The previous prime is 621463561. The next prime is 621463621. The reversal of 621463603 is 306364126.

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 621463603 - 2¹⁷ = 621332531 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (621463693) 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, 61701 + ... + 71062.

It is an arithmetic number, because the mean of its divisors is an integer number (80720512).

Almost surely, 2^621463603 is an apocalyptic number.

621463603 is a deficient number, since it is larger than the sum of its proper divisors (24300493).

621463603 is a wasteful number, since it uses less digits than its factorization.

621463603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132945.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 621463603 is about 24929.1717271152. The cubic root of 621463603 is about 853.3723479511.

The spelling of 621463603 in words is "six hundred twenty-one million, four hundred sixty-three thousand, six hundred three".