7149766 has 16 divisors (see below), whose sum is σ = 11710944. Its totient is φ = 3253824.

The previous prime is 7149761. The next prime is 7149767. The reversal of 7149766 is 6679417.

7149766 = 345² + 346² + ... + 396².

It is a super-2 number, since 2×7149766² = 102238307709512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7149761) by changing a digit.

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, 15 + ... + 3781.

It is an arithmetic number, because the mean of its divisors is an integer number (731934).

Almost surely, 2^7149766 is an apocalyptic number.

7149766 is a deficient number, since it is larger than the sum of its proper divisors (4561178).

7149766 is a wasteful number, since it uses less digits than its factorization.

7149766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3855.

The product of its digits is 63504, while the sum is 40.

The square root of 7149766 is about 2673.9046355470. The cubic root of 7149766 is about 192.6477507374.

The spelling of 7149766 in words is "seven million, one hundred forty-nine thousand, seven hundred sixty-six".