621242265 has 16 divisors (see below), whose sum is σ = 1135986048. Its totient is φ = 283996416.

The previous prime is 621242257. The next prime is 621242267. The reversal of 621242265 is 562242126.

It is a happy number.

621242265 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 621242265 - 2³ = 621242257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (621242267) 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, 2958192 + ... + 2958401.

It is an arithmetic number, because the mean of its divisors is an integer number (70999128).

Almost surely, 2^621242265 is an apocalyptic number.

It is an amenable number.

621242265 is a deficient number, since it is larger than the sum of its proper divisors (514743783).

621242265 is a wasteful number, since it uses less digits than its factorization.

621242265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5916608.

The product of its digits is 11520, while the sum is 30.

The square root of 621242265 is about 24924.7319945471. The cubic root of 621242265 is about 853.2710246897.

The spelling of 621242265 in words is "six hundred twenty-one million, two hundred forty-two thousand, two hundred sixty-five".