7721605034 has 32 divisors (see below), whose sum is σ = 14198937984. Its totient is φ = 3098969280.

The previous prime is 7721605027. The next prime is 7721605049. The reversal of 7721605034 is 4305061277.

It is a junction number, because it is equal to n+sod(n) for n = 7721604985 and 7721605003.

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, 580349 + ... + 593504.

It is an arithmetic number, because the mean of its divisors is an integer number (443716812).

Almost surely, 2^7721605034 is an apocalyptic number.

7721605034 is a deficient number, since it is larger than the sum of its proper divisors (6477332950).

7721605034 is a wasteful number, since it uses less digits than its factorization.

7721605034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173902.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 7721605034 is about 87872.6637470380. The cubic root of 7721605034 is about 1976.5259826613.

The spelling of 7721605034 in words is "seven billion, seven hundred twenty-one million, six hundred five thousand, thirty-four".