621050646 has 32 divisors (see below), whose sum is σ = 1298907648. Its totient is φ = 197588160.

The previous prime is 621050641. The next prime is 621050653. The reversal of 621050646 is 646050126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621050641) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 62586 + ... + 71826.

It is an arithmetic number, because the mean of its divisors is an integer number (40590864).

Almost surely, 2^621050646 is an apocalyptic number.

621050646 is an abundant number, since it is smaller than the sum of its proper divisors (677857002).

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

621050646 is a wasteful number, since it uses less digits than its factorization.

621050646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9756.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 621050646 is about 24920.8877450222. The cubic root of 621050646 is about 853.1832866401.

The spelling of 621050646 in words is "six hundred twenty-one million, fifty thousand, six hundred forty-six".