621352065 has 16 divisors (see below), whose sum is σ = 1026233856. Its totient is φ = 320697600.

The previous prime is 621352049. The next prime is 621352073. The reversal of 621352065 is 560253126.

It is not a de Polignac number, because 621352065 - 2⁴ = 621352049 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 667656 + ... + 668585.

It is an arithmetic number, because the mean of its divisors is an integer number (64139616).

Almost surely, 2^621352065 is an apocalyptic number.

It is an amenable number.

621352065 is a deficient number, since it is larger than the sum of its proper divisors (404881791).

621352065 is a wasteful number, since it uses less digits than its factorization.

621352065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336280.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 621352065 is about 24926.9345287382. The cubic root of 621352065 is about 853.3212915205.

The spelling of 621352065 in words is "six hundred twenty-one million, three hundred fifty-two thousand, sixty-five".