1690611005 has 8 divisors (see below), whose sum is σ = 2075913312. Its totient is φ = 1321035408.

The previous prime is 1690611001. The next prime is 1690611029. The reversal of 1690611005 is 5001160961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1690611005 - 2² = 1690611001 is a prime.

It is a super-2 number, since 2×1690611005² = 5716331140454220050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1690611001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3931439 + ... + 3931868.

It is an arithmetic number, because the mean of its divisors is an integer number (259489164).

Almost surely, 2^1690611005 is an apocalyptic number.

It is an amenable number.

1690611005 is a deficient number, since it is larger than the sum of its proper divisors (385302307).

1690611005 is an equidigital number, since it uses as much as digits as its factorization.

1690611005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7863355.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 1690611005 is about 41117.0403239338. The cubic root of 1690611005 is about 1191.2819565262.

Adding to 1690611005 its reverse (5001160961), we get a palindrome (6691771966).

The spelling of 1690611005 in words is "one billion, six hundred ninety million, six hundred eleven thousand, five".