1670697 has 24 divisors (see below), whose sum is σ = 2880384. Its totient is φ = 912384.

The previous prime is 1670687. The next prime is 1670717. The reversal of 1670697 is 7960761.

It is not a de Polignac number, because 1670697 - 2⁶ = 1670633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1670657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 873 + ... + 2025.

It is an arithmetic number, because the mean of its divisors is an integer number (120016).

2^1670697 is an apocalyptic number.

It is an amenable number.

1670697 is a deficient number, since it is larger than the sum of its proper divisors (1209687).

1670697 is a wasteful number, since it uses less digits than its factorization.

1670697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189 (or 1186 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 1670697 is about 1292.5544475959. The cubic root of 1670697 is about 118.6586029884.

Subtracting 1670697 from its reverse (7960761), we obtain a square (6290064 = 2508²).

The spelling of 1670697 in words is "one million, six hundred seventy thousand, six hundred ninety-seven".