61165650 has 96 divisors (see below), whose sum is σ = 186738048. Its totient is φ = 12902400.

The previous prime is 61165633. The next prime is 61165661. The reversal of 61165650 is 5656116.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11410 + ... + 15890.

It is an arithmetic number, because the mean of its divisors is an integer number (1945188).

Almost surely, 2^61165650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61165650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93369024).

61165650 is an abundant number, since it is smaller than the sum of its proper divisors (125572398).

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

61165650 is a wasteful number, since it uses less digits than its factorization.

61165650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4516 (or 4511 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 61165650 is about 7820.8471408154. The cubic root of 61165650 is about 394.0057245340.

The spelling of 61165650 in words is "sixty-one million, one hundred sixty-five thousand, six hundred fifty".