1601612 has 12 divisors (see below), whose sum is σ = 2899680. Its totient is φ = 773136.

The previous prime is 1601609. The next prime is 1601617. The reversal of 1601612 is 2161061.

It is a happy number.

It is a Cunningham number, because it is equal to 117³-1.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1601617) 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, 6788 + ... + 7019.

It is an arithmetic number, because the mean of its divisors is an integer number (241640).

2^1601612 is an apocalyptic number.

It is an amenable number.

1601612 is a deficient number, since it is larger than the sum of its proper divisors (1298068).

1601612 is a wasteful number, since it uses less digits than its factorization.

1601612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13840 (or 13838 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1601612 is about 1265.5481026022. The cubic root of 1601612 is about 116.9999756495. Note that the first 4 decimals are identical.

Adding to 1601612 its reverse (2161061), we get a palindrome (3762673).

The spelling of 1601612 in words is "one million, six hundred one thousand, six hundred twelve".