7705728070 has 8 divisors (see below), whose sum is σ = 13870310544. Its totient is φ = 3082291224.

The previous prime is 7705728049. The next prime is 7705728073. The reversal of 7705728070 is 708275077.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7705728073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385286394 + ... + 385286413.

It is an arithmetic number, because the mean of its divisors is an integer number (1733788818).

Almost surely, 2^7705728070 is an apocalyptic number.

7705728070 is a deficient number, since it is larger than the sum of its proper divisors (6164582474).

7705728070 is a wasteful number, since it uses less digits than its factorization.

7705728070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770572814.

The product of its (nonzero) digits is 192080, while the sum is 43.

The square root of 7705728070 is about 87782.2765141119. The cubic root of 7705728070 is about 1975.1703592833.

The spelling of 7705728070 in words is "seven billion, seven hundred five million, seven hundred twenty-eight thousand, seventy".