1690717716 has 18 divisors (see below), whose sum is σ = 4273758762. Its totient is φ = 563572560.

The previous prime is 1690717687. The next prime is 1690717723. The reversal of 1690717716 is 6177170961.

It can be written as a sum of positive squares in only one way, i.e., 1551572100 + 139145616 = 39390^2 + 11796^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 23482155 + ... + 23482226.

Almost surely, 2^1690717716 is an apocalyptic number.

It is an amenable number.

1690717716 is an abundant number, since it is smaller than the sum of its proper divisors (2583041046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1690717716 is a wasteful number, since it uses less digits than its factorization.

1690717716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46964391 (or 46964386 counting only the distinct ones).

The product of its (nonzero) digits is 111132, while the sum is 45.

The square root of 1690717716 is about 41118.3379527918. The cubic root of 1690717716 is about 1191.3070204852.

The spelling of 1690717716 in words is "one billion, six hundred ninety million, seven hundred seventeen thousand, seven hundred sixteen".