61317036 has 36 divisors (see below), whose sum is σ = 169087464. Its totient is φ = 18580800.

The previous prime is 61317031. The next prime is 61317037. The reversal of 61317036 is 63071316.

61317036 is a `hidden beast` number, since 613 + 17 + 0 + 36 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (61317031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77025 + ... + 77816.

It is an arithmetic number, because the mean of its divisors is an integer number (4696874).

Almost surely, 2^61317036 is an apocalyptic number.

61317036 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

61317036 is an abundant number, since it is smaller than the sum of its proper divisors (107770428).

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

61317036 is a wasteful number, since it uses less digits than its factorization.

61317036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154862 (or 154857 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 61317036 is about 7830.5195229946. The cubic root of 61317036 is about 394.3305136332.

The spelling of 61317036 in words is "sixty-one million, three hundred seventeen thousand, thirty-six".