1670866617 has 32 divisors (see below), whose sum is σ = 2572821504. Its totient is φ = 944798400.

The previous prime is 1670866583. The next prime is 1670866621. The reversal of 1670866617 is 7166680761.

It is not a de Polignac number, because 1670866617 - 2⁶ = 1670866553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1670866627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1350123 + ... + 1351359.

It is an arithmetic number, because the mean of its divisors is an integer number (80400672).

Almost surely, 2^1670866617 is an apocalyptic number.

It is an amenable number.

1670866617 is a deficient number, since it is larger than the sum of its proper divisors (901954887).

1670866617 is a wasteful number, since it uses less digits than its factorization.

1670866617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1869.

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 1670866617 is about 40876.2353574788. The cubic root of 1670866617 is about 1186.6261844524.

The spelling of 1670866617 in words is "one billion, six hundred seventy million, eight hundred sixty-six thousand, six hundred seventeen".