866962845 has 80 divisors (see below), whose sum is σ = 1793975040. Its totient is φ = 392345856.

The previous prime is 866962843. The next prime is 866962853. The reversal of 866962845 is 548269668.

It is a happy number.

866962845 is a `hidden beast` number, since 8 + 6 + 6 + 9 + 628 + 4 + 5 = 666.

It is not a de Polignac number, because 866962845 - 2¹ = 866962843 is a prime.

It is a super-2 number, since 2×866962845² = 1503249149220988050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 866962791 and 866962800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866962843) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 290521 + ... + 293489.

It is an arithmetic number, because the mean of its divisors is an integer number (22424688).

Almost surely, 2^866962845 is an apocalyptic number.

It is an amenable number.

866962845 is an abundant number, since it is smaller than the sum of its proper divisors (927012195).

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

866962845 is a wasteful number, since it uses less digits than its factorization.

866962845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3096 (or 3087 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The square root of 866962845 is about 29444.2327969333. The cubic root of 866962845 is about 953.5280981627.

The spelling of 866962845 in words is "eight hundred sixty-six million, nine hundred sixty-two thousand, eight hundred forty-five".