6390634 has 8 divisors (see below), whose sum is σ = 9766980. Its totient is φ = 3134976.

The previous prime is 6390611. The next prime is 6390641. The reversal of 6390634 is 4360936.

It can be written as a sum of positive squares in 2 ways, for example, as 6027025 + 363609 = 2455^2 + 603^2 .

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 = 6390596 and 6390605.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30039 + ... + 30250.

Almost surely, 2^6390634 is an apocalyptic number.

6390634 is a deficient number, since it is larger than the sum of its proper divisors (3376346).

6390634 is a wasteful number, since it uses less digits than its factorization.

6390634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60344.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 6390634 is about 2527.9703321044. The cubic root of 6390634 is about 185.5729401257.

The spelling of 6390634 in words is "six million, three hundred ninety thousand, six hundred thirty-four".