6981554 has 4 divisors (see below), whose sum is σ = 10472334. Its totient is φ = 3490776.

The previous prime is 6981551. The next prime is 6981563. The reversal of 6981554 is 4551896.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6027025 + 954529 = 2455^2 + 977^2 .

It is not an unprimeable number, because it can be changed into a prime (6981551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1745387 + ... + 1745390.

Almost surely, 2^6981554 is an apocalyptic number.

6981554 is a deficient number, since it is larger than the sum of its proper divisors (3490780).

6981554 is a wasteful number, since it uses less digits than its factorization.

6981554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3490779.

The product of its digits is 43200, while the sum is 38.

The square root of 6981554 is about 2642.2630451944. The cubic root of 6981554 is about 191.1249422366.

The spelling of 6981554 in words is "six million, nine hundred eighty-one thousand, five hundred fifty-four".