621245201 has 8 divisors (see below), whose sum is σ = 637269120. Its totient is φ = 605338288.

The previous prime is 621245179. The next prime is 621245227. The reversal of 621245201 is 102542126.

It is a happy number.

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 621245201 - 2²⁶ = 554136337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (621245291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18446 + ... + 39783.

It is an arithmetic number, because the mean of its divisors is an integer number (79658640).

Almost surely, 2^621245201 is an apocalyptic number.

It is an amenable number.

621245201 is a deficient number, since it is larger than the sum of its proper divisors (16023919).

621245201 is a wasteful number, since it uses less digits than its factorization.

621245201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58503.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 621245201 is about 24924.7908918009. The cubic root of 621245201 is about 853.2723688780.

Adding to 621245201 its reverse (102542126), we get a palindrome (723787327).

The spelling of 621245201 in words is "six hundred twenty-one million, two hundred forty-five thousand, two hundred one".