1606634 has 8 divisors (see below), whose sum is σ = 2431620. Its totient is φ = 796096.

The previous prime is 1606603. The next prime is 1606639. The reversal of 1606634 is 4366061.

It can be written as a sum of positive squares in 2 ways, for example, as 1203409 + 403225 = 1097^2 + 635^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1606639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3329 + ... + 3780.

2^1606634 is an apocalyptic number.

1606634 is a deficient number, since it is larger than the sum of its proper divisors (824986).

1606634 is a wasteful number, since it uses less digits than its factorization.

1606634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7224.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 1606634 is about 1267.5306702404. The cubic root of 1606634 is about 117.1221360760.

The spelling of 1606634 in words is "one million, six hundred six thousand, six hundred thirty-four".