201668670 has 64 divisors (see below), whose sum is σ = 614615040. Its totient is φ = 46095264.

The previous prime is 201668651. The next prime is 201668689. The reversal of 201668670 is 76866102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (201668651) and next prime (201668689).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51462 + ... + 55241.

It is an arithmetic number, because the mean of its divisors is an integer number (9603360).

Almost surely, 2^201668670 is an apocalyptic number.

201668670 is an abundant number, since it is smaller than the sum of its proper divisors (412946370).

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

201668670 is a wasteful number, since it uses less digits than its factorization.

201668670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106726 (or 106720 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 201668670 is about 14201.0094711608. The cubic root of 201668670 is about 586.4254521585.

The spelling of 201668670 in words is "two hundred one million, six hundred sixty-eight thousand, six hundred seventy".