6981451 has 4 divisors (see below), whose sum is σ = 6987400. Its totient is φ = 6975504.

The previous prime is 6981449. The next prime is 6981463. The reversal of 6981451 is 1541896.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6981451 - 2¹ = 6981449 is a prime.

It is a Duffinian number.

6981451 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6981421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561 + ... + 3778.

It is an arithmetic number, because the mean of its divisors is an integer number (1746850).

Almost surely, 2^6981451 is an apocalyptic number.

6981451 is the 1526-th hex number.

6981451 is a deficient number, since it is larger than the sum of its proper divisors (5949).

6981451 is a wasteful number, since it uses less digits than its factorization.

6981451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5948.

The product of its digits is 8640, while the sum is 34.

The square root of 6981451 is about 2642.2435542546. The cubic root of 6981451 is about 191.1240023328.

The spelling of 6981451 in words is "six million, nine hundred eighty-one thousand, four hundred fifty-one".