1685006734 has 4 divisors (see below), whose sum is σ = 2527510104. Its totient is φ = 842503366.

The previous prime is 1685006717. The next prime is 1685006777. The reversal of 1685006734 is 4376005861.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4376005861 = 61 ⋅71737801.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421251682 + ... + 421251685.

It is an arithmetic number, because the mean of its divisors is an integer number (631877526).

Almost surely, 2^1685006734 is an apocalyptic number.

1685006734 is a deficient number, since it is larger than the sum of its proper divisors (842503370).

1685006734 is an equidigital number, since it uses as much as digits as its factorization.

1685006734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842503369.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 1685006734 is about 41048.8335278848. The cubic root of 1685006734 is about 1189.9641572897.

The spelling of 1685006734 in words is "one billion, six hundred eighty-five million, six thousand, seven hundred thirty-four".