195661560 has 64 divisors (see below), whose sum is σ = 588178080. Its totient is φ = 52070400.

The previous prime is 195661559. The next prime is 195661561. The reversal of 195661560 is 65166591.

It is an interprime number because it is at equal distance from previous prime (195661559) and next prime (195661561).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195661561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70764 + ... + 73476.

Almost surely, 2^195661560 is an apocalyptic number.

195661560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195661560 is an abundant number, since it is smaller than the sum of its proper divisors (392516520).

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

195661560 is a wasteful number, since it uses less digits than its factorization.

195661560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3328 (or 3324 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 39.

The square root of 195661560 is about 13987.9076348109. The cubic root of 195661560 is about 580.5440396703.

The spelling of 195661560 in words is "one hundred ninety-five million, six hundred sixty-one thousand, five hundred sixty".