7148986 has 8 divisors (see below), whose sum is σ = 11548404. Its totient is φ = 3299520.

The previous prime is 7148951. The next prime is 7148987. The reversal of 7148986 is 6898417.

It can be written as a sum of positive squares in 2 ways, for example, as 5202961 + 1946025 = 2281^2 + 1395^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×7148986² = 102216001656392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7148987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137455 + ... + 137506.

Almost surely, 2^7148986 is an apocalyptic number.

7148986 is a deficient number, since it is larger than the sum of its proper divisors (4399418).

7148986 is a wasteful number, since it uses less digits than its factorization.

7148986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274976.

The product of its digits is 96768, while the sum is 43.

The square root of 7148986 is about 2673.7587774517. The cubic root of 7148986 is about 192.6407448806.

The spelling of 7148986 in words is "seven million, one hundred forty-eight thousand, nine hundred eighty-six".