83554661 has 4 divisors (see below), whose sum is σ = 83807424. Its totient is φ = 83301900.

The previous prime is 83554657. The next prime is 83554687. The reversal of 83554661 is 16645538.

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 83554661 - 2² = 83554657 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 (83554631) 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, 125885 + ... + 126546.

It is an arithmetic number, because the mean of its divisors is an integer number (20951856).

Almost surely, 2^83554661 is an apocalyptic number.

It is an amenable number.

83554661 is a deficient number, since it is larger than the sum of its proper divisors (252763).

83554661 is a wasteful number, since it uses less digits than its factorization.

83554661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252762.

The product of its digits is 86400, while the sum is 38.

The square root of 83554661 is about 9140.8238687768. The cubic root of 83554661 is about 437.1765855790.

The spelling of 83554661 in words is "eighty-three million, five hundred fifty-four thousand, six hundred sixty-one".