7621746064 has 20 divisors (see below), whose sum is σ = 14768519040. Its totient is φ = 3810515360.

The previous prime is 7621746059. The next prime is 7621746079. The reversal of 7621746064 is 4606471267.

It is a self number, because there is not a number n which added to its sum of digits gives 7621746064.

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, 266709 + ... + 293899.

It is an arithmetic number, because the mean of its divisors is an integer number (738425952).

Almost surely, 2^7621746064 is an apocalyptic number.

It is an amenable number.

7621746064 is a deficient number, since it is larger than the sum of its proper divisors (7146772976).

7621746064 is a wasteful number, since it uses less digits than its factorization.

7621746064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44718 (or 44712 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 43.

The square root of 7621746064 is about 87302.6120113253. The cubic root of 7621746064 is about 1967.9685711706.

The spelling of 7621746064 in words is "seven billion, six hundred twenty-one million, seven hundred forty-six thousand, sixty-four".