6866742492 has 24 divisors (see below), whose sum is σ = 17802666000. Its totient is φ = 2288914128.

The previous prime is 6866742479. The next prime is 6866742499. The reversal of 6866742492 is 2942476686.

6866742492 is a `hidden beast` number, since 6 + 86 + 6 + 74 + 2 + 492 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6866742499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31790367 + ... + 31790582.

It is an arithmetic number, because the mean of its divisors is an integer number (741777750).

Almost surely, 2^6866742492 is an apocalyptic number.

It is an amenable number.

6866742492 is an abundant number, since it is smaller than the sum of its proper divisors (10935923508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6866742492 is a wasteful number, since it uses less digits than its factorization.

6866742492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63580962 (or 63580954 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 54.

The square root of 6866742492 is about 82865.8101511112. The cubic root of 6866742492 is about 1900.7146427114.

The spelling of 6866742492 in words is "six billion, eight hundred sixty-six million, seven hundred forty-two thousand, four hundred ninety-two".