621466115 has 4 divisors (see below), whose sum is σ = 745759344. Its totient is φ = 497172888.

The previous prime is 621466103. The next prime is 621466121. The reversal of 621466115 is 511664126.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-621466115 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 62146607 + ... + 62146616.

It is an arithmetic number, because the mean of its divisors is an integer number (186439836).

Almost surely, 2^621466115 is an apocalyptic number.

621466115 is a deficient number, since it is larger than the sum of its proper divisors (124293229).

621466115 is a wasteful number, since it uses less digits than its factorization.

621466115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124293228.

The product of its digits is 8640, while the sum is 32.

The square root of 621466115 is about 24929.2221098052. Note that the first 3 decimals coincide. The cubic root of 621466115 is about 853.3734977467.

The spelling of 621466115 in words is "six hundred twenty-one million, four hundred sixty-six thousand, one hundred fifteen".