661828010 has 16 divisors (see below), whose sum is σ = 1209072096. Its totient is φ = 260779728.

The previous prime is 661827983. The next prime is 661828039. The reversal of 661828010 is 10828166.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 493232 + ... + 494571.

It is an arithmetic number, because the mean of its divisors is an integer number (75567006).

Almost surely, 2^661828010 is an apocalyptic number.

661828010 is a deficient number, since it is larger than the sum of its proper divisors (547244086).

661828010 is a wasteful number, since it uses less digits than its factorization.

661828010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987877.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 661828010 is about 25726.0181528351. The cubic root of 661828010 is about 871.4618528516.

The spelling of 661828010 in words is "six hundred sixty-one million, eight hundred twenty-eight thousand, ten".