1690360996 has 27 divisors (see below), whose sum is σ = 3016371267. Its totient is φ = 828858240.

The previous prime is 1690360993. The next prime is 1690360999. The reversal of 1690360996 is 6990630961.

The square root of 1690360996 is 41114.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (1690360993) and next prime (1690360999).

It can be written as a sum of positive squares in 4 ways, for example, as 943104100 + 747256896 = 30710^2 + 27336^2 .

It is a super-2 number, since 2×1690360996² = 5714640593596224032, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1690360993) 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 8 ways as a sum of consecutive naturals, for example, 5015740 + ... + 5016076.

Almost surely, 2^1690360996 is an apocalyptic number.

1690360996 is the 41114-th square number.

It is an amenable number.

1690360996 is a deficient number, since it is larger than the sum of its proper divisors (1326010271).

1690360996 is an frugal number, since it uses more digits than its factorization.

1690360996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800 (or 400 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 49.

The cubic root of 1690360996 is about 1191.2232310335.

Multiplying 1690360996 by its sum of digits (49), we get a square (82827688804 = 287798²).

The spelling of 1690360996 in words is "one billion, six hundred ninety million, three hundred sixty thousand, nine hundred ninety-six".