621001472 has 288 divisors, whose sum is σ = 1703224320. Its totient is φ = 218972160.

The previous prime is 621001471. The next prime is 621001481. The reversal of 621001472 is 274100126.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621001471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10180322 + ... + 10180382.

Almost surely, 2^621001472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 621001472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (851612160).

621001472 is an abundant number, since it is smaller than the sum of its proper divisors (1082222848).

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

621001472 is a wasteful number, since it uses less digits than its factorization.

621001472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 621001472 is about 24919.9011233993. The cubic root of 621001472 is about 853.1607680567.

Adding to 621001472 its reverse (274100126), we get a palindrome (895101598).

The spelling of 621001472 in words is "six hundred twenty-one million, one thousand, four hundred seventy-two".