214804461685 has 12 divisors (see below), whose sum is σ = 283328861004. Its totient is φ = 156221426240.

The previous prime is 214804461679. The next prime is 214804461691. The reversal of 214804461685 is 586164408412.

It is an interprime number because it is at equal distance from previous prime (214804461679) and next prime (214804461691).

It can be written as a sum of positive squares in 2 ways, for example, as 121277366001 + 93527095684 = 348249^2 + 305822^2 .

It is not a de Polignac number, because 214804461685 - 2³⁵ = 180444723317 is a prime.

It is a super-2 number, since 2×214804461685² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 177523744 + ... + 177524953.

It is an arithmetic number, because the mean of its divisors is an integer number (23610738417).

Almost surely, 2^214804461685 is an apocalyptic number.

It is an amenable number.

214804461685 is a deficient number, since it is larger than the sum of its proper divisors (68524399319).

214804461685 is a wasteful number, since it uses less digits than its factorization.

214804461685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355048724 (or 355048713 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 49.

The spelling of 214804461685 in words is "two hundred fourteen billion, eight hundred four million, four hundred sixty-one thousand, six hundred eighty-five".