684170097 has 16 divisors (see below), whose sum is σ = 982873920. Its totient is φ = 420823872.

The previous prime is 684170063. The next prime is 684170131. The reversal of 684170097 is 790071486.

It is an interprime number because it is at equal distance from previous prime (684170063) and next prime (684170131).

It is not a de Polignac number, because 684170097 - 2¹⁸ = 683907953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (684170497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135543 + ... + 140499.

It is an arithmetic number, because the mean of its divisors is an integer number (61429620).

Almost surely, 2^684170097 is an apocalyptic number.

It is an amenable number.

684170097 is a deficient number, since it is larger than the sum of its proper divisors (298703823).

684170097 is a wasteful number, since it uses less digits than its factorization.

684170097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8512.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 684170097 is about 26156.6453697717. The cubic root of 684170097 is about 881.1598416089.

The spelling of 684170097 in words is "six hundred eighty-four million, one hundred seventy thousand, ninety-seven".