83782661 has 4 divisors (see below), whose sum is σ = 84158592. Its totient is φ = 83406732.

The previous prime is 83782637. The next prime is 83782663. The reversal of 83782661 is 16628738.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83782661 - 2⁶ = 83782597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83782663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187631 + ... + 188076.

It is an arithmetic number, because the mean of its divisors is an integer number (21039648).

Almost surely, 2^83782661 is an apocalyptic number.

It is an amenable number.

83782661 is a deficient number, since it is larger than the sum of its proper divisors (375931).

83782661 is a wasteful number, since it uses less digits than its factorization.

83782661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375930.

The product of its digits is 96768, while the sum is 41.

The square root of 83782661 is about 9153.2868959735. The cubic root of 83782661 is about 437.5738733487.

The spelling of 83782661 in words is "eighty-three million, seven hundred eighty-two thousand, six hundred sixty-one".