861692867 has 16 divisors (see below), whose sum is σ = 1010372352. Its totient is φ = 719500320.

The previous prime is 861692837. The next prime is 861692869. The reversal of 861692867 is 768296168.

It is not a de Polignac number, because 861692867 - 2¹⁴ = 861676483 is a prime.

It is a super-3 number, since 3×861692867³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (861692869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115892 + ... + 123102.

It is an arithmetic number, because the mean of its divisors is an integer number (63148272).

Almost surely, 2^861692867 is an apocalyptic number.

861692867 is a deficient number, since it is larger than the sum of its proper divisors (148679485).

861692867 is a wasteful number, since it uses less digits than its factorization.

861692867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7658.

The product of its digits is 1741824, while the sum is 53.

The square root of 861692867 is about 29354.6055500666. The cubic root of 861692867 is about 951.5921103382.

The spelling of 861692867 in words is "eight hundred sixty-one million, six hundred ninety-two thousand, eight hundred sixty-seven".