622215406 has 8 divisors (see below), whose sum is σ = 933454080. Its totient is φ = 311064048.

The previous prime is 622215397. The next prime is 622215437. The reversal of 622215406 is 604512226.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×622215406² = 774304022927489672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 595 + ... + 35281.

It is an arithmetic number, because the mean of its divisors is an integer number (116681760).

Almost surely, 2^622215406 is an apocalyptic number.

622215406 is a deficient number, since it is larger than the sum of its proper divisors (311238674).

622215406 is a wasteful number, since it uses less digits than its factorization.

622215406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43658.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 622215406 is about 24944.2459497175. The cubic root of 622215406 is about 853.7163259164.

The spelling of 622215406 in words is "six hundred twenty-two million, two hundred fifteen thousand, four hundred six".