7457668 has 6 divisors (see below), whose sum is σ = 13050926. Its totient is φ = 3728832.

The previous prime is 7457647. The next prime is 7457687. The reversal of 7457668 is 8667547.

It can be written as a sum of positive squares in only one way, i.e., 7225344 + 232324 = 2688^2 + 482^2 .

It is an Ulam number.

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 as a sum of consecutive naturals, namely, 932205 + ... + 932212.

Almost surely, 2^7457668 is an apocalyptic number.

It is an amenable number.

7457668 is a deficient number, since it is larger than the sum of its proper divisors (5593258).

7457668 is a wasteful number, since it uses less digits than its factorization.

7457668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864421 (or 1864419 counting only the distinct ones).

The product of its digits is 282240, while the sum is 43.

The square root of 7457668 is about 2730.8731204507. The cubic root of 7457668 is about 195.3744110461.

The spelling of 7457668 in words is "seven million, four hundred fifty-seven thousand, six hundred sixty-eight".