866673396 has 108 divisors (see below), whose sum is σ = 2425769892. Its totient is φ = 259978752.

The previous prime is 866673389. The next prime is 866673461. The reversal of 866673396 is 693376668.

It is a happy number.

866673396 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 283450896 + 583222500 = 16836^2 + 24150^2 .

It is a super-2 number, since 2×866673396² = 1502245550668345632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 322410 + ... + 325086.

Almost surely, 2^866673396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 866673396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1212884946).

866673396 is an abundant number, since it is smaller than the sum of its proper divisors (1559096496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

866673396 is a wasteful number, since it uses less digits than its factorization.

866673396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2750 (or 2722 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 54.

The square root of 866673396 is about 29439.3171795815. The cubic root of 866673396 is about 953.4219696333.

The spelling of 866673396 in words is "eight hundred sixty-six million, six hundred seventy-three thousand, three hundred ninety-six".