866351477 has 4 divisors (see below), whose sum is σ = 872089056. Its totient is φ = 860613900.

The previous prime is 866351471. The next prime is 866351489. The reversal of 866351477 is 774153668.

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 866351477 - 2⁴ = 866351461 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 (866351471) 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, 2868563 + ... + 2868864.

It is an arithmetic number, because the mean of its divisors is an integer number (218022264).

Almost surely, 2^866351477 is an apocalyptic number.

It is an amenable number.

866351477 is a deficient number, since it is larger than the sum of its proper divisors (5737579).

866351477 is a wasteful number, since it uses less digits than its factorization.

866351477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5737578.

The product of its digits is 846720, while the sum is 47.

The square root of 866351477 is about 29433.8491706403. The cubic root of 866351477 is about 953.3039079898.

The spelling of 866351477 in words is "eight hundred sixty-six million, three hundred fifty-one thousand, four hundred seventy-seven".