621822734 has 16 divisors (see below), whose sum is σ = 1012397568. Its totient is φ = 284733792.

The previous prime is 621822731. The next prime is 621822749. The reversal of 621822734 is 437228126.

It is a junction number, because it is equal to n+sod(n) for n = 621822694 and 621822703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621822731) 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, 90857 + ... + 97460.

It is an arithmetic number, because the mean of its divisors is an integer number (63274848).

Almost surely, 2^621822734 is an apocalyptic number.

621822734 is a deficient number, since it is larger than the sum of its proper divisors (390574834).

621822734 is a wasteful number, since it uses less digits than its factorization.

621822734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188459.

The product of its digits is 32256, while the sum is 35.

The square root of 621822734 is about 24936.3737139144. The cubic root of 621822734 is about 853.5366983906.

The spelling of 621822734 in words is "six hundred twenty-one million, eight hundred twenty-two thousand, seven hundred thirty-four".