61305386 has 4 divisors (see below), whose sum is σ = 91958082. Its totient is φ = 30652692.

The previous prime is 61305359. The next prime is 61305389. The reversal of 61305386 is 68350316.

61305386 is nontrivially palindromic in base 13.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 37442161 + 23863225 = 6119^2 + 4885^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61305389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15326345 + ... + 15326348.

Almost surely, 2^61305386 is an apocalyptic number.

61305386 is a deficient number, since it is larger than the sum of its proper divisors (30652696).

61305386 is a wasteful number, since it uses less digits than its factorization.

61305386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30652695.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 61305386 is about 7829.7756034257. The cubic root of 61305386 is about 394.3055382932.

The spelling of 61305386 in words is "sixty-one million, three hundred five thousand, three hundred eighty-six".