610721650066 has 32 divisors (see below), whose sum is σ = 1000536297408. Its totient is φ = 277274965440.

The previous prime is 610721650043. The next prime is 610721650093. The reversal of 610721650066 is 660056127016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98548080 + ... + 98554276.

It is an arithmetic number, because the mean of its divisors is an integer number (31266759294).

Almost surely, 2^610721650066 is an apocalyptic number.

610721650066 is a deficient number, since it is larger than the sum of its proper divisors (389814647342).

610721650066 is a wasteful number, since it uses less digits than its factorization.

610721650066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10746.

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 610721650066 in words is "six hundred ten billion, seven hundred twenty-one million, six hundred fifty thousand, sixty-six".