61167660 has 96 divisors (see below), whose sum is σ = 179262720. Its totient is φ = 15568128.

The previous prime is 61167643. The next prime is 61167661. The reversal of 61167660 is 6676116.

Added to its reverse (6676116) it gives a triangular number (67843776 = T₁₁₆₄₈).

It is not an unprimeable number, because it can be changed into a prime (61167661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130747 + ... + 131213.

It is an arithmetic number, because the mean of its divisors is an integer number (1867320).

Almost surely, 2^61167660 is an apocalyptic number.

61167660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61167660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89631360).

61167660 is an abundant number, since it is smaller than the sum of its proper divisors (118095060).

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

61167660 is a wasteful number, since it uses less digits than its factorization.

61167660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575 (or 573 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 61167660 is about 7820.9756424630. The cubic root of 61167660 is about 394.0100403705.

Adding to 61167660 its reverse (6676116), we get a triangular number (67843776 = T₁₁₆₄₈).

The spelling of 61167660 in words is "sixty-one million, one hundred sixty-seven thousand, six hundred sixty".