153965 has 16 divisors (see below), whose sum is σ = 217728. Its totient is φ = 102336.

The previous prime is 153953. The next prime is 153991. The reversal of 153965 is 569351.

It is a cyclic number.

It is not a de Polignac number, because 153965 - 2⁴ = 153949 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1814 + ... + 1896.

It is an arithmetic number, because the mean of its divisors is an integer number (13608).

2¹⁵³⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

153965 is a deficient number, since it is larger than the sum of its proper divisors (63763).

153965 is an equidigital number, since it uses as much as digits as its factorization.

153965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148.

The product of its digits is 4050, while the sum is 29.

The square root of 153965 is about 392.3837407437. The cubic root of 153965 is about 53.5970231138.

The spelling of 153965 in words is "one hundred fifty-three thousand, nine hundred sixty-five".