661326462 has 12 divisors (see below), whose sum is σ = 1432874040. Its totient is φ = 220442148.

The previous prime is 661326461. The next prime is 661326467. The reversal of 661326462 is 264623166.

661326462 is a `hidden beast` number, since 6 + 6 + 1 + 3 + 2 + 646 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (661326461) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 18370162 + ... + 18370197.

It is an arithmetic number, because the mean of its divisors is an integer number (119406170).

Almost surely, 2^661326462 is an apocalyptic number.

661326462 is an abundant number, since it is smaller than the sum of its proper divisors (771547578).

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

661326462 is a wasteful number, since it uses less digits than its factorization.

661326462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36740367 (or 36740364 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 661326462 is about 25716.2684307035. The cubic root of 661326462 is about 871.2416594887.

The spelling of 661326462 in words is "six hundred sixty-one million, three hundred twenty-six thousand, four hundred sixty-two".