153664385 has 32 divisors (see below), whose sum is σ = 217451520. Its totient is φ = 102062592.

The previous prime is 153664349. The next prime is 153664387. The reversal of 153664385 is 583466351.

153664385 = 10² + 11² + ... + 772².

It is a cyclic number.

It is not a de Polignac number, because 153664385 - 2⁸ = 153664129 is a prime.

It is a super-2 number, since 2×153664385² = 47225486434856450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (153664387) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 178877 + ... + 179733.

It is an arithmetic number, because the mean of its divisors is an integer number (6795360).

Almost surely, 2^153664385 is an apocalyptic number.

It is an amenable number.

153664385 is a deficient number, since it is larger than the sum of its proper divisors (63787135).

153664385 is a wasteful number, since it uses less digits than its factorization.

153664385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025.

The product of its digits is 259200, while the sum is 41.

The square root of 153664385 is about 12396.1439568924. The cubic root of 153664385 is about 535.6211785025.

The spelling of 153664385 in words is "one hundred fifty-three million, six hundred sixty-four thousand, three hundred eighty-five".