621010636 has 12 divisors (see below), whose sum is σ = 1105188840. Its totient is φ = 305242400.

The previous prime is 621010619. The next prime is 621010651. The reversal of 621010636 is 636010126.

621010636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 621010636.

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, 1315465 + ... + 1315936.

It is an arithmetic number, because the mean of its divisors is an integer number (92099070).

Almost surely, 2^621010636 is an apocalyptic number.

It is an amenable number.

621010636 is a deficient number, since it is larger than the sum of its proper divisors (484178204).

621010636 is a wasteful number, since it uses less digits than its factorization.

621010636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2631464 (or 2631462 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 621010636 is about 24920.0849918294. The cubic root of 621010636 is about 853.1649646795.

The spelling of 621010636 in words is "six hundred twenty-one million, ten thousand, six hundred thirty-six".