195615 has 48 divisors (see below), whose sum is σ = 419328. Its totient is φ = 85536.

The previous prime is 195599. The next prime is 195659. The reversal of 195615 is 516591.

It is not a de Polignac number, because 195615 - 2⁴ = 195599 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

Its product of digits (1350) is a multiple of the sum of its prime factors (50).

195615 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8494 + ... + 8516.

It is an arithmetic number, because the mean of its divisors is an integer number (8736).

2¹⁹⁵⁶¹⁵ is an apocalyptic number.

195615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

195615 is an abundant number, since it is smaller than the sum of its proper divisors (223713).

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

195615 is an equidigital number, since it uses as much as digits as its factorization.

195615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50 (or 38 counting only the distinct ones).

The product of its digits is 1350, while the sum is 27.

The square root of 195615 is about 442.2838455110. The cubic root of 195615 is about 58.0497986893.

The spelling of 195615 in words is "one hundred ninety-five thousand, six hundred fifteen".