6972538 has 4 divisors (see below), whose sum is σ = 10458810. Its totient is φ = 3486268.

The previous prime is 6972517. The next prime is 6972547. The reversal of 6972538 is 8352796.

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., 6953769 + 18769 = 2637^2 + 137^2 .

It is a super-2 number, since 2×6972538² = 97232572322888, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 6972538.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1743133 + ... + 1743136.

Almost surely, 2^6972538 is an apocalyptic number.

6972538 is a deficient number, since it is larger than the sum of its proper divisors (3486272).

6972538 is a wasteful number, since it uses less digits than its factorization.

6972538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3486271.

The product of its digits is 90720, while the sum is 40.

The square root of 6972538 is about 2640.5563807652. The cubic root of 6972538 is about 191.0426336853.

The spelling of 6972538 in words is "six million, nine hundred seventy-two thousand, five hundred thirty-eight".