1690407005 has 16 divisors (see below), whose sum is σ = 2319919104. Its totient is φ = 1158312960.

The previous prime is 1690407001. The next prime is 1690407007. The reversal of 1690407005 is 5007040961.

It is a happy number.

It is not a de Polignac number, because 1690407005 - 2² = 1690407001 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 (1690407001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35069 + ... + 67901.

It is an arithmetic number, because the mean of its divisors is an integer number (144994944).

Almost surely, 2^1690407005 is an apocalyptic number.

It is an amenable number.

1690407005 is a deficient number, since it is larger than the sum of its proper divisors (629512099).

1690407005 is a wasteful number, since it uses less digits than its factorization.

1690407005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34316.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 1690407005 is about 41114.5595257933. The cubic root of 1690407005 is about 1191.2340386839.

Adding to 1690407005 its reverse (5007040961), we get a palindrome (6697447966).

The spelling of 1690407005 in words is "one billion, six hundred ninety million, four hundred seven thousand, five".