7149865 has 8 divisors (see below), whose sum is σ = 8595720. Its totient is φ = 5709312.

The previous prime is 7149851. The next prime is 7149899. The reversal of 7149865 is 5689417.

It can be written as a sum of positive squares in 4 ways, for example, as 944784 + 6205081 = 972^2 + 2491^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7149865 - 2⁹ = 7149353 is a prime.

It is a super-2 number, since 2×7149865² = 102241139036450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2841 + ... + 4729.

It is an arithmetic number, because the mean of its divisors is an integer number (1074465).

Almost surely, 2^7149865 is an apocalyptic number.

It is an amenable number.

7149865 is a deficient number, since it is larger than the sum of its proper divisors (1445855).

7149865 is a wasteful number, since it uses less digits than its factorization.

7149865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2651.

The product of its digits is 60480, while the sum is 40.

The square root of 7149865 is about 2673.9231477363. The cubic root of 7149865 is about 192.6486399059.

The spelling of 7149865 in words is "seven million, one hundred forty-nine thousand, eight hundred sixty-five".