6861972 has 24 divisors (see below), whose sum is σ = 17243296. Its totient is φ = 2111328.

The previous prime is 6861971. The next prime is 6861973. The reversal of 6861972 is 2791686.

It is an interprime number because it is at equal distance from previous prime (6861971) and next prime (6861973).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 6861972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6861971) 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, 21838 + ... + 22149.

Almost surely, 2^6861972 is an apocalyptic number.

It is an amenable number.

6861972 is an abundant number, since it is smaller than the sum of its proper divisors (10381324).

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

6861972 is a wasteful number, since it uses less digits than its factorization.

6861972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44007 (or 44005 counting only the distinct ones).

The product of its digits is 36288, while the sum is 39.

The square root of 6861972 is about 2619.5366002406. The cubic root of 6861972 is about 190.0274383273.

The spelling of 6861972 in words is "six million, eight hundred sixty-one thousand, nine hundred seventy-two".