513667385 has 24 divisors (see below), whose sum is σ = 774328128. Its totient is φ = 320205600.

The previous prime is 513667369. The next prime is 513667387. The reversal of 513667385 is 583766315.

It is not a de Polignac number, because 513667385 - 2⁴ = 513667369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (513667387) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56411 + ... + 64880.

It is an arithmetic number, because the mean of its divisors is an integer number (32263672).

Almost surely, 2^513667385 is an apocalyptic number.

513667385 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

513667385 is a deficient number, since it is larger than the sum of its proper divisors (260660743).

513667385 is a wasteful number, since it uses less digits than its factorization.

513667385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121325 (or 121314 counting only the distinct ones).

The product of its digits is 453600, while the sum is 44.

The square root of 513667385 is about 22664.2314010425. The cubic root of 513667385 is about 800.8674886767.

The spelling of 513667385 in words is "five hundred thirteen million, six hundred sixty-seven thousand, three hundred eighty-five".