621061934 has 4 divisors (see below), whose sum is σ = 931592904. Its totient is φ = 310530966.

The previous prime is 621061933. The next prime is 621061937. The reversal of 621061934 is 439160126.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 439160126 = 2 ⋅219580063.

It is a self number, because there is not a number n which added to its sum of digits gives 621061934.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621061933) 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 as a sum of consecutive naturals, namely, 155265482 + ... + 155265485.

It is an arithmetic number, because the mean of its divisors is an integer number (232898226).

Almost surely, 2^621061934 is an apocalyptic number.

621061934 is a deficient number, since it is larger than the sum of its proper divisors (310530970).

621061934 is a wasteful number, since it uses less digits than its factorization.

621061934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310530969.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 621061934 is about 24921.1142206764. The cubic root of 621061934 is about 853.1884556628.

The spelling of 621061934 in words is "six hundred twenty-one million, sixty-one thousand, nine hundred thirty-four".