201670047 has 32 divisors (see below), whose sum is σ = 315840000. Its totient is φ = 126826560.

The previous prime is 201670039. The next prime is 201670181. The reversal of 201670047 is 740076102.

It is not a de Polignac number, because 201670047 - 2³ = 201670039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 201670047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201670747) 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, 143454 + ... + 144852.

It is an arithmetic number, because the mean of its divisors is an integer number (9870000).

Almost surely, 2^201670047 is an apocalyptic number.

201670047 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

201670047 is a deficient number, since it is larger than the sum of its proper divisors (114169953).

201670047 is a wasteful number, since it uses less digits than its factorization.

201670047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1708 (or 1702 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 201670047 is about 14201.0579535470. The cubic root of 201670047 is about 586.4267868659.

The spelling of 201670047 in words is "two hundred one million, six hundred seventy thousand, forty-seven".