621650248704 has 297 divisors, whose sum is σ = 1847388549279. Its totient is φ = 201338081280.

The previous prime is 621650248673. The next prime is 621650248721. The reversal of 621650248704 is 407842056126.

The square root of 621650248704 is 788448.

It is a perfect power (a square), and thus also a powerful number.

621650248704 is a `hidden beast` number, since 6 + 2 + 165 + 0 + 2 + 487 + 0 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 621650248704.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3254713249 + ... + 3254713439.

Almost surely, 2^621650248704 is an apocalyptic number.

621650248704 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

621650248704 is the 788448-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 621650248704

621650248704 is an abundant number, since it is smaller than the sum of its proper divisors (1225738300575).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

621650248704 is an equidigital number, since it uses as much as digits as its factorization.

621650248704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 621650248704 in words is "six hundred twenty-one billion, six hundred fifty million, two hundred forty-eight thousand, seven hundred four".