866775950 has 24 divisors (see below), whose sum is σ = 1614172728. Its totient is φ = 346286880.

The previous prime is 866775941. The next prime is 866775967. The reversal of 866775950 is 59577668.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 866775892 and 866775901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32489 + ... + 52811.

It is an arithmetic number, because the mean of its divisors is an integer number (67257197).

Almost surely, 2^866775950 is an apocalyptic number.

866775950 is a deficient number, since it is larger than the sum of its proper divisors (747396778).

866775950 is a wasteful number, since it uses less digits than its factorization.

866775950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21188 (or 21183 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 53.

The square root of 866775950 is about 29441.0589143801. The cubic root of 866775950 is about 953.4595744875.

The spelling of 866775950 in words is "eight hundred sixty-six million, seven hundred seventy-five thousand, nine hundred fifty".