1685077164 has 36 divisors (see below), whose sum is σ = 4260929400. Its totient is φ = 561504000.

The previous prime is 1685077159. The next prime is 1685077171. The reversal of 1685077164 is 4617705861.

1685077164 is a `hidden beast` number, since 16 + 8 + 507 + 71 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138187 + ... + 149885.

It is an arithmetic number, because the mean of its divisors is an integer number (118359150).

Almost surely, 2^1685077164 is an apocalyptic number.

It is an amenable number.

1685077164 is an abundant number, since it is smaller than the sum of its proper divisors (2575852236).

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

1685077164 is a wasteful number, since it uses less digits than its factorization.

1685077164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15710 (or 15705 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 1685077164 is about 41049.6913995708. The cubic root of 1685077164 is about 1189.9807364535.

The spelling of 1685077164 in words is "one billion, six hundred eighty-five million, seventy-seven thousand, one hundred sixty-four".