866474501 has 4 divisors (see below), whose sum is σ = 866582412. Its totient is φ = 866366592.

The previous prime is 866474491. The next prime is 866474503. The reversal of 866474501 is 105474668.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 199543876 + 666930625 = 14126^2 + 25825^2 .

It is a cyclic number.

It is not a de Polignac number, because 866474501 - 2⁶ = 866474437 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 (866474503) 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, 40850 + ... + 58323.

It is an arithmetic number, because the mean of its divisors is an integer number (216645603).

Almost surely, 2^866474501 is an apocalyptic number.

It is an amenable number.

866474501 is a deficient number, since it is larger than the sum of its proper divisors (107911).

866474501 is an equidigital number, since it uses as much as digits as its factorization.

866474501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107910.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 866474501 is about 29435.9389352540. The cubic root of 866474501 is about 953.3490296724.

The spelling of 866474501 in words is "eight hundred sixty-six million, four hundred seventy-four thousand, five hundred one".