61085313 has 16 divisors (see below), whose sum is σ = 90652800. Its totient is φ = 40653360.

The previous prime is 61085303. The next prime is 61085317. The reversal of 61085313 is 31358016.

It is a de Polignac number, because none of the positive numbers 2^k-61085313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (61085317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17548 + ... + 20738.

It is an arithmetic number, because the mean of its divisors is an integer number (5665800).

Almost surely, 2^61085313 is an apocalyptic number.

It is an amenable number.

61085313 is a deficient number, since it is larger than the sum of its proper divisors (29567487).

61085313 is a wasteful number, since it uses less digits than its factorization.

61085313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3909 (or 3903 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 61085313 is about 7815.7093727953. The cubic root of 61085313 is about 393.8331488800.

The spelling of 61085313 in words is "sixty-one million, eighty-five thousand, three hundred thirteen".