1641607 has 6 divisors (see below), whose sum is σ = 1804544. Its totient is φ = 1492260.

The previous prime is 1641593. The next prime is 1641613. The reversal of 1641607 is 7061461.

It is a happy number.

It is not a de Polignac number, because 1641607 - 2¹⁵ = 1608839 is a prime.

It is a Duffinian number.

1641607 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641617) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6663 + ... + 6904.

2^1641607 is an apocalyptic number.

1641607 is a deficient number, since it is larger than the sum of its proper divisors (162937).

1641607 is a wasteful number, since it uses less digits than its factorization.

1641607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13589 (or 13578 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 1641607 is about 1281.2521219495. The cubic root of 1641607 is about 117.9658763726.

It can be divided in two parts, 164 and 1607, that added together give a palindrome (1771).

The spelling of 1641607 in words is "one million, six hundred forty-one thousand, six hundred seven".