1696889690 has 8 divisors (see below), whose sum is σ = 3054401460. Its totient is φ = 678755872.

The previous prime is 1696889681. The next prime is 1696889717. The reversal of 1696889690 is 969886961.

It can be written as a sum of positive squares in 2 ways, for example, as 1679442361 + 17447329 = 40981^2 + 4177^2 .

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

It is a super-2 number, since 2×1696889690² = 5758869240056592200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84844475 + ... + 84844494.

Almost surely, 2^1696889690 is an apocalyptic number.

1696889690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1696889690 is a deficient number, since it is larger than the sum of its proper divisors (1357511770).

1696889690 is a wasteful number, since it uses less digits than its factorization.

1696889690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169688976.

The product of its (nonzero) digits is 10077696, while the sum is 62.

The square root of 1696889690 is about 41193.3209392008. The cubic root of 1696889690 is about 1192.7548843016.

The spelling of 1696889690 in words is "one billion, six hundred ninety-six million, eight hundred eighty-nine thousand, six hundred ninety".