6721974 has 32 divisors (see below), whose sum is σ = 17072640. Its totient is φ = 1920456.

The previous prime is 6721973. The next prime is 6721993. The reversal of 6721974 is 4791276.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6721973) 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, 8514 + ... + 9269.

It is an arithmetic number, because the mean of its divisors is an integer number (533520).

Almost surely, 2^6721974 is an apocalyptic number.

6721974 is an abundant number, since it is smaller than the sum of its proper divisors (10350666).

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

6721974 is a wasteful number, since it uses less digits than its factorization.

6721974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17801 (or 17795 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 6721974 is about 2592.6769949224. The cubic root of 6721974 is about 188.7262350384.

The spelling of 6721974 in words is "six million, seven hundred twenty-one thousand, nine hundred seventy-four".