861267963 has 4 divisors (see below), whose sum is σ = 1148357288. Its totient is φ = 574178640.

The previous prime is 861267961. The next prime is 861267983. The reversal of 861267963 is 369762168.

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

It is not a de Polignac number, because 861267963 - 2¹ = 861267961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (861267961) 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, 143544658 + ... + 143544663.

It is an arithmetic number, because the mean of its divisors is an integer number (287089322).

Almost surely, 2^861267963 is an apocalyptic number.

861267963 is a deficient number, since it is larger than the sum of its proper divisors (287089325).

861267963 is a wasteful number, since it uses less digits than its factorization.

861267963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287089324.

The product of its digits is 653184, while the sum is 48.

The square root of 861267963 is about 29347.3672243355. The cubic root of 861267963 is about 951.4356734036.

The spelling of 861267963 in words is "eight hundred sixty-one million, two hundred sixty-seven thousand, nine hundred sixty-three".