201697860 has 384 divisors, whose sum is σ = 768144384. Its totient is φ = 38338560.

The previous prime is 201697849. The next prime is 201697861. The reversal of 201697860 is 68796102.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (201697861) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3805594 + ... + 3805646.

It is an arithmetic number, because the mean of its divisors is an integer number (2000376).

Almost surely, 2^201697860 is an apocalyptic number.

201697860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201697860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (384072192).

201697860 is an abundant number, since it is smaller than the sum of its proper divisors (566446524).

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

201697860 is a wasteful number, since it uses less digits than its factorization.

201697860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 201697860 is about 14202.0371778136. The cubic root of 201697860 is about 586.4537443289.

The spelling of 201697860 in words is "two hundred one million, six hundred ninety-seven thousand, eight hundred sixty".