855498766 has 4 divisors (see below), whose sum is σ = 1283248152. Its totient is φ = 427749382.

The previous prime is 855498737. The next prime is 855498767. The reversal of 855498766 is 667894558.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 667894558 = 2 ⋅333947279.

It is a super-3 number, since 3×855498766³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 855498766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855498767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213874690 + ... + 213874693.

It is an arithmetic number, because the mean of its divisors is an integer number (320812038).

Almost surely, 2^855498766 is an apocalyptic number.

855498766 is a deficient number, since it is larger than the sum of its proper divisors (427749386).

855498766 is a wasteful number, since it uses less digits than its factorization.

855498766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427749385.

The product of its digits is 14515200, while the sum is 58.

The square root of 855498766 is about 29248.9105096241. The cubic root of 855498766 is about 949.3065173469.

The spelling of 855498766 in words is "eight hundred fifty-five million, four hundred ninety-eight thousand, seven hundred sixty-six".