661383342 has 48 divisors (see below), whose sum is σ = 1481276160. Its totient is φ = 213148176.

The previous prime is 661383323. The next prime is 661383379. The reversal of 661383342 is 243383166.

661383342 is a `hidden beast` number, since 6 + 613 + 8 + 3 + 34 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 661383297 and 661383306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65509 + ... + 74927.

It is an arithmetic number, because the mean of its divisors is an integer number (30859920).

Almost surely, 2^661383342 is an apocalyptic number.

661383342 is an abundant number, since it is smaller than the sum of its proper divisors (819892818).

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

661383342 is a wasteful number, since it uses less digits than its factorization.

661383342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9557 (or 9554 counting only the distinct ones).

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

The square root of 661383342 is about 25717.3743216527. The cubic root of 661383342 is about 871.2666369684.

The spelling of 661383342 in words is "six hundred sixty-one million, three hundred eighty-three thousand, three hundred forty-two".