201614640 has 40 divisors (see below), whose sum is σ = 625006128. Its totient is φ = 53763840.

The previous prime is 201614639. The next prime is 201614657. The reversal of 201614640 is 46416102.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 201614640.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419791 + ... + 420270.

Almost surely, 2^201614640 is an apocalyptic number.

201614640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201614640 is an abundant number, since it is smaller than the sum of its proper divisors (423391488).

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

201614640 is a wasteful number, since it uses less digits than its factorization.

201614640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840077 (or 840071 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 201614640 is about 14199.1070141752. The cubic root of 201614640 is about 586.3730768156.

The spelling of 201614640 in words is "two hundred one million, six hundred fourteen thousand, six hundred forty".