621214426 has 16 divisors (see below), whose sum is σ = 1065518784. Its totient is φ = 266089824.

The previous prime is 621214417. The next prime is 621214427. The reversal of 621214426 is 624412126.

It is a junction number, because it is equal to n+sod(n) for n = 621214394 and 621214403.

It is not an unprimeable number, because it can be changed into a prime (621214427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16966 + ... + 39118.

It is an arithmetic number, because the mean of its divisors is an integer number (66594924).

Almost surely, 2^621214426 is an apocalyptic number.

621214426 is a deficient number, since it is larger than the sum of its proper divisors (444304358).

621214426 is a wasteful number, since it uses less digits than its factorization.

621214426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24165.

The product of its digits is 4608, while the sum is 28.

The square root of 621214426 is about 24924.1735269196. The cubic root of 621214426 is about 853.2582789552.

The spelling of 621214426 in words is "six hundred twenty-one million, two hundred fourteen thousand, four hundred twenty-six".