61905385 has 16 divisors (see below), whose sum is σ = 75442752. Its totient is φ = 48760000.

The previous prime is 61905379. The next prime is 61905407. The reversal of 61905385 is 58350916.

It is not a de Polignac number, because 61905385 - 2⁵ = 61905353 is a prime.

It is a Duffinian 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, 134055 + ... + 134515.

It is an arithmetic number, because the mean of its divisors is an integer number (4715172).

Almost surely, 2^61905385 is an apocalyptic number.

It is an amenable number.

61905385 is a deficient number, since it is larger than the sum of its proper divisors (13537367).

61905385 is a wasteful number, since it uses less digits than its factorization.

61905385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 61905385 is about 7867.9975216061. The cubic root of 61905385 is about 395.5877273305.

The spelling of 61905385 in words is "sixty-one million, nine hundred five thousand, three hundred eighty-five".