61136390 has 64 divisors (see below), whose sum is σ = 130014720. Its totient is φ = 20267520.

The previous prime is 61136381. The next prime is 61136419. The reversal of 61136390 is 9363116.

61136390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 466625 + ... + 466755.

It is an arithmetic number, because the mean of its divisors is an integer number (2031480).

Almost surely, 2^61136390 is an apocalyptic number.

61136390 is an abundant number, since it is smaller than the sum of its proper divisors (68878330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61136390 is a wasteful number, since it uses less digits than its factorization.

61136390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 61136390 is about 7818.9762757026. The cubic root of 61136390 is about 393.9428872698.

The spelling of 61136390 in words is "sixty-one million, one hundred thirty-six thousand, three hundred ninety".