82701661 has 24 divisors (see below), whose sum is σ = 101988960. Its totient is φ = 66679200.

The previous prime is 82701659. The next prime is 82701673. The reversal of 82701661 is 16610728.

It is not a de Polignac number, because 82701661 - 2¹ = 82701659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82701611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 196231 + ... + 196651.

It is an arithmetic number, because the mean of its divisors is an integer number (4249540).

Almost surely, 2^82701661 is an apocalyptic number.

It is an amenable number.

82701661 is a deficient number, since it is larger than the sum of its proper divisors (19287299).

82701661 is a wasteful number, since it uses less digits than its factorization.

82701661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665 (or 658 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 82701661 is about 9094.0453594646. The cubic root of 82701661 is about 435.6837988062.

The spelling of 82701661 in words is "eighty-two million, seven hundred one thousand, six hundred sixty-one".