61159650 has 48 divisors (see below), whose sum is σ = 152320608. Its totient is φ = 16240000.

The previous prime is 61159639. The next prime is 61159663. The reversal of 61159650 is 5695116.

61159650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×61159650⁴ (a number of 32 digits) contains 4444 as substring.

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 23 ways as a sum of consecutive naturals, for example, 41425 + ... + 42875.

It is an arithmetic number, because the mean of its divisors is an integer number (3173346).

Almost surely, 2^61159650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61159650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76160304).

61159650 is an abundant number, since it is smaller than the sum of its proper divisors (91160958).

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

61159650 is a wasteful number, since it uses less digits than its factorization.

61159650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747 (or 1742 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 33.

The square root of 61159650 is about 7820.4635412487. The cubic root of 61159650 is about 393.9928408776.

The spelling of 61159650 in words is "sixty-one million, one hundred fifty-nine thousand, six hundred fifty".