6657634 has 8 divisors (see below), whose sum is σ = 10018908. Its totient is φ = 3318000.

The previous prime is 6657631. The next prime is 6657661. The reversal of 6657634 is 4367566.

It can be written as a sum of positive squares in 2 ways, for example, as 5745609 + 912025 = 2397^2 + 955^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 6657593 and 6657602.

It is not an unprimeable number, because it can be changed into a prime (6657631) 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 3 ways as a sum of consecutive naturals, for example, 4617 + ... + 5884.

Almost surely, 2^6657634 is an apocalyptic number.

6657634 is a deficient number, since it is larger than the sum of its proper divisors (3361274).

6657634 is a wasteful number, since it uses less digits than its factorization.

6657634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10820.

The product of its digits is 90720, while the sum is 37.

The square root of 6657634 is about 2580.2391362042. The cubic root of 6657634 is about 188.1221667105.

The spelling of 6657634 in words is "six million, six hundred fifty-seven thousand, six hundred thirty-four".