84748661 has 4 divisors (see below), whose sum is σ = 86551872. Its totient is φ = 82945452.

The previous prime is 84748649. The next prime is 84748669. The reversal of 84748661 is 16684748.

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 84748661 - 2⁶ = 84748597 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 (84748669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 901535 + ... + 901628.

It is an arithmetic number, because the mean of its divisors is an integer number (21637968).

Almost surely, 2^84748661 is an apocalyptic number.

It is an amenable number.

84748661 is a deficient number, since it is larger than the sum of its proper divisors (1803211).

84748661 is a wasteful number, since it uses less digits than its factorization.

84748661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1803210.

The product of its digits is 258048, while the sum is 44.

The square root of 84748661 is about 9205.9035949764. The cubic root of 84748661 is about 439.2491688649.

The spelling of 84748661 in words is "eighty-four million, seven hundred forty-eight thousand, six hundred sixty-one".