1640107 has 16 divisors (see below), whose sum is σ = 1999872. Its totient is φ = 1314720.

The previous prime is 1640083. The next prime is 1640131. The reversal of 1640107 is 7010461.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1640083) and next prime (1640131).

It is a cyclic number.

It is not a de Polignac number, because 1640107 - 2¹¹ = 1638059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1640147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9738 + ... + 9904.

It is an arithmetic number, because the mean of its divisors is an integer number (124992).

2^1640107 is an apocalyptic number.

1640107 is a deficient number, since it is larger than the sum of its proper divisors (359765).

1640107 is a wasteful number, since it uses less digits than its factorization.

1640107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 1640107 is about 1280.6666232865. Note that the first 4 decimals coincide. The cubic root of 1640107 is about 117.9299354243.

Adding to 1640107 its reverse (7010461), we get a palindrome (8650568).

The spelling of 1640107 in words is "one million, six hundred forty thousand, one hundred seven".