1662007 has 2 divisors, whose sum is σ = 1662008. Its totient is φ = 1662006.

The previous prime is 1661983. The next prime is 1662013. The reversal of 1662007 is 7002661.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1662007 is a prime.

It is a Chen prime.

It is an Ulam number.

1662007 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1662307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831003 + 831004.

It is an arithmetic number, because the mean of its divisors is an integer number (831004).

2^1662007 is an apocalyptic number.

1662007 is a deficient number, since it is larger than the sum of its proper divisors (1).

1662007 is an equidigital number, since it uses as much as digits as its factorization.

1662007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 1662007 is about 1289.1885044477. The cubic root of 1662007 is about 118.4525141029.

Adding to 1662007 its reverse (7002661), we get a palindrome (8664668).

The spelling of 1662007 in words is "one million, six hundred sixty-two thousand, seven".