621061996 has 6 divisors (see below), whose sum is σ = 1086858500. Its totient is φ = 310530996.

The previous prime is 621061951. The next prime is 621062009. The reversal of 621061996 is 699160126.

It is an unprimeable number.

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, 77632746 + ... + 77632753.

Almost surely, 2^621061996 is an apocalyptic number.

It is an amenable number.

621061996 is a deficient number, since it is larger than the sum of its proper divisors (465796504).

621061996 is a wasteful number, since it uses less digits than its factorization.

621061996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155265503 (or 155265501 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 621061996 is about 24921.1154646015. The cubic root of 621061996 is about 853.1884840538.

The spelling of 621061996 in words is "six hundred twenty-one million, sixty-one thousand, nine hundred ninety-six".