7149668 has 6 divisors (see below), whose sum is σ = 12511926. Its totient is φ = 3574832.

The previous prime is 7149641. The next prime is 7149671. The reversal of 7149668 is 8669417.

It can be written as a sum of positive squares in only one way, i.e., 4129024 + 3020644 = 2032^2 + 1738^2 .

It is a super-2 number, since 2×7149668² = 102235505020448, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 893705 + ... + 893712.

It is an arithmetic number, because the mean of its divisors is an integer number (2085321).

Almost surely, 2^7149668 is an apocalyptic number.

It is an amenable number.

7149668 is a deficient number, since it is larger than the sum of its proper divisors (5362258).

7149668 is a wasteful number, since it uses less digits than its factorization.

7149668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1787421 (or 1787419 counting only the distinct ones).

The product of its digits is 72576, while the sum is 41.

The square root of 7149668 is about 2673.8863102234. The cubic root of 7149668 is about 192.6468705423.

The spelling of 7149668 in words is "seven million, one hundred forty-nine thousand, six hundred sixty-eight".