661232010 has 32 divisors (see below), whose sum is σ = 1625666112. Its totient is φ = 172027520.

The previous prime is 661232003. The next prime is 661232021. The reversal of 661232010 is 10232166.

It is a happy number.

661232010 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 267564 + ... + 270023.

It is an arithmetic number, because the mean of its divisors is an integer number (50802066).

Almost surely, 2^661232010 is an apocalyptic number.

661232010 is an abundant number, since it is smaller than the sum of its proper divisors (964434102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

661232010 is a wasteful number, since it uses less digits than its factorization.

661232010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537638.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 661232010 is about 25714.4319400604. The cubic root of 661232010 is about 871.2001800077.

Adding to 661232010 its reverse (10232166), we get a palindrome (671464176).

The spelling of 661232010 in words is "six hundred sixty-one million, two hundred thirty-two thousand, ten".