872091693 has 24 divisors (see below), whose sum is σ = 1375189920. Its totient is φ = 528161760.

The previous prime is 872091629. The next prime is 872091743. The reversal of 872091693 is 396190278.

It is not a de Polignac number, because 872091693 - 2⁶ = 872091629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872091613) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 204103 + ... + 208331.

It is an arithmetic number, because the mean of its divisors is an integer number (57299580).

Almost surely, 2^872091693 is an apocalyptic number.

It is an amenable number.

872091693 is a deficient number, since it is larger than the sum of its proper divisors (503098227).

872091693 is a wasteful number, since it uses less digits than its factorization.

872091693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6329 (or 6326 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 872091693 is about 29531.1986380506. The cubic root of 872091693 is about 955.4047215986.

The spelling of 872091693 in words is "eight hundred seventy-two million, ninety-one thousand, six hundred ninety-three".