166897340 has 12 divisors (see below), whose sum is σ = 350484456. Its totient is φ = 66758928.

The previous prime is 166897333. The next prime is 166897351. The reversal of 166897340 is 43798661.

It is a junction number, because it is equal to n+sod(n) for n = 166897291 and 166897300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4172414 + ... + 4172453.

It is an arithmetic number, because the mean of its divisors is an integer number (29207038).

Almost surely, 2^166897340 is an apocalyptic number.

166897340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166897340 is an abundant number, since it is smaller than the sum of its proper divisors (183587116).

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

166897340 is a wasteful number, since it uses less digits than its factorization.

166897340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8344876 (or 8344874 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 166897340 is about 12918.8753380470. The cubic root of 166897340 is about 550.5749799633.

The spelling of 166897340 in words is "one hundred sixty-six million, eight hundred ninety-seven thousand, three hundred forty".