866894351 has 4 divisors (see below), whose sum is σ = 867527112. Its totient is φ = 866261592.

The previous prime is 866894339. The next prime is 866894359. The reversal of 866894351 is 153498668.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 866894351 - 2¹⁴ = 866877967 is a prime.

It is a super-2 number, since 2×866894351² = 1503011631591422402, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 866894351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866894359) 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, 314321 + ... + 317066.

It is an arithmetic number, because the mean of its divisors is an integer number (216881778).

Almost surely, 2^866894351 is an apocalyptic number.

866894351 is a deficient number, since it is larger than the sum of its proper divisors (632761).

866894351 is a wasteful number, since it uses less digits than its factorization.

866894351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632760.

The product of its digits is 1244160, while the sum is 50.

The square root of 866894351 is about 29443.0696599387. The cubic root of 866894351 is about 953.5029864854.

The spelling of 866894351 in words is "eight hundred sixty-six million, eight hundred ninety-four thousand, three hundred fifty-one".