661083411 has 8 divisors (see below), whose sum is σ = 919768320. Its totient is φ = 421560392.

The previous prime is 661083389. The next prime is 661083443. The reversal of 661083411 is 114380166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 661083411 - 2⁶ = 661083347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (661083611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4790391 + ... + 4790528.

It is an arithmetic number, because the mean of its divisors is an integer number (114971040).

Almost surely, 2^661083411 is an apocalyptic number.

661083411 is a deficient number, since it is larger than the sum of its proper divisors (258684909).

661083411 is a wasteful number, since it uses less digits than its factorization.

661083411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9580945.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 661083411 is about 25711.5423691384. The cubic root of 661083411 is about 871.1349133678.

The spelling of 661083411 in words is "six hundred sixty-one million, eighty-three thousand, four hundred eleven".