207195640 has 16 divisors (see below), whose sum is σ = 466190280. Its totient is φ = 82878240.

The previous prime is 207195623. The next prime is 207195641. The reversal of 207195640 is 46591702.

It is a junction number, because it is equal to n+sod(n) for n = 207195596 and 207195605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207195641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2589906 + ... + 2589985.

Almost surely, 2^207195640 is an apocalyptic number.

207195640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

207195640 is an abundant number, since it is smaller than the sum of its proper divisors (258994640).

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

207195640 is a wasteful number, since it uses less digits than its factorization.

207195640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5179902 (or 5179898 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 207195640 is about 14394.2919242316. The cubic root of 207195640 is about 591.7344727774.

The spelling of 207195640 in words is "two hundred seven million, one hundred ninety-five thousand, six hundred forty".