621224729746 has 8 divisors (see below), whose sum is σ = 943632501120. Its totient is φ = 306680562708.

The previous prime is 621224729701. The next prime is 621224729767. The reversal of 621224729746 is 647927422126.

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

It is a super-3 number, since 3×621224729746³ (a number of 36 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 621224729693 and 621224729702.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1965900886 + ... + 1965901201.

It is an arithmetic number, because the mean of its divisors is an integer number (117954062640).

Almost surely, 2^621224729746 is an apocalyptic number.

621224729746 is a deficient number, since it is larger than the sum of its proper divisors (322407771374).

621224729746 is a wasteful number, since it uses less digits than its factorization.

621224729746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3931802168.

The product of its digits is 4064256, while the sum is 52.

The spelling of 621224729746 in words is "six hundred twenty-one billion, two hundred twenty-four million, seven hundred twenty-nine thousand, seven hundred forty-six".