6430636 has 6 divisors (see below), whose sum is σ = 11253620. Its totient is φ = 3215316.

The previous prime is 6430621. The next prime is 6430661. The reversal of 6430636 is 6360346.

It is a d-powerful number, because it can be written as 6⁴ + 4⁶ + 3¹³ + 0 + 6⁴ + 3¹⁴ + 6⁶ .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 803826 + ... + 803833.

Almost surely, 2^6430636 is an apocalyptic number.

It is an amenable number.

6430636 is a deficient number, since it is larger than the sum of its proper divisors (4822984).

6430636 is a wasteful number, since it uses less digits than its factorization.

6430636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607663 (or 1607661 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 6430636 is about 2535.8698704784. The cubic root of 6430636 is about 185.9593313020.

The spelling of 6430636 in words is "six million, four hundred thirty thousand, six hundred thirty-six".