661068710 has 32 divisors (see below), whose sum is σ = 1261612800. Its totient is φ = 248698080.

The previous prime is 661068701. The next prime is 661068743. The reversal of 661068710 is 17860166.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13895 + ... + 38925.

It is an arithmetic number, because the mean of its divisors is an integer number (39425400).

Almost surely, 2^661068710 is an apocalyptic number.

661068710 is a deficient number, since it is larger than the sum of its proper divisors (600544090).

661068710 is a wasteful number, since it uses less digits than its factorization.

661068710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25196.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 661068710 is about 25711.2564842716. The cubic root of 661068710 is about 871.1284559631.

The spelling of 661068710 in words is "six hundred sixty-one million, sixty-eight thousand, seven hundred ten".