867965251 has 4 divisors (see below), whose sum is σ = 868038904. Its totient is φ = 867891600.

The previous prime is 867965233. The next prime is 867965257. The reversal of 867965251 is 152569768.

867965251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a 4-Lehmer number, since φ(867965251) divides (867965251-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 867965251 - 2⁷ = 867965123 is a prime.

It is a deceptive number, since it divides R_867965250.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 867965195 and 867965204.

It is not an unprimeable number, because it can be changed into a prime (867965257) 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, 14730 + ... + 44191.

It is an arithmetic number, because the mean of its divisors is an integer number (217009726).

It is a Poulet number, since it divides 2^867965250-1.

Almost surely, 2^867965251 is an apocalyptic number.

867965251 is the 14731-st decagonal number.

867965251 is a deficient number, since it is larger than the sum of its proper divisors (73653).

867965251 is a wasteful number, since it uses less digits than its factorization.

867965251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73652.

The product of its digits is 907200, while the sum is 49.

The square root of 867965251 is about 29461.2499904536. The cubic root of 867965251 is about 953.8954549825.

The spelling of 867965251 in words is "eight hundred sixty-seven million, nine hundred sixty-five thousand, two hundred fifty-one".