61812385 has 32 divisors (see below), whose sum is σ = 80985600. Its totient is φ = 45163008.

The previous prime is 61812383. The next prime is 61812397. The reversal of 61812385 is 58321816.

It is a cyclic number.

It is not a de Polignac number, because 61812385 - 2¹ = 61812383 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 61812385.

It is not an unprimeable number, because it can be changed into a prime (61812383) 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, 310516 + ... + 310714.

It is an arithmetic number, because the mean of its divisors is an integer number (2530800).

Almost surely, 2^61812385 is an apocalyptic number.

It is an amenable number.

61812385 is a deficient number, since it is larger than the sum of its proper divisors (19173215).

61812385 is a wasteful number, since it uses less digits than its factorization.

61812385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337.

The product of its digits is 11520, while the sum is 34.

The square root of 61812385 is about 7862.0852831803. The cubic root of 61812385 is about 395.3895318802.

The spelling of 61812385 in words is "sixty-one million, eight hundred twelve thousand, three hundred eighty-five".