1660607 has 4 divisors (see below), whose sum is σ = 1788360. Its totient is φ = 1532856.

The previous prime is 1660601. The next prime is 1660609. The reversal of 1660607 is 7060661.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1660607 - 2¹⁶ = 1595071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660601) 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, 63857 + ... + 63882.

It is an arithmetic number, because the mean of its divisors is an integer number (447090).

2^1660607 is an apocalyptic number.

1660607 is a deficient number, since it is larger than the sum of its proper divisors (127753).

1660607 is a wasteful number, since it uses less digits than its factorization.

1660607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127752.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 1660607 is about 1288.6454128270. The cubic root of 1660607 is about 118.4192450684.

The spelling of 1660607 in words is "one million, six hundred sixty thousand, six hundred seven".