61390060 has 48 divisors (see below), whose sum is σ = 137906496. Its totient is φ = 22874112.

The previous prime is 61390057. The next prime is 61390081. The reversal of 61390060 is 6009316.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34144 + ... + 35896.

It is an arithmetic number, because the mean of its divisors is an integer number (2873052).

Almost surely, 2^61390060 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61390060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68953248).

61390060 is an abundant number, since it is smaller than the sum of its proper divisors (76516436).

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

61390060 is a wasteful number, since it uses less digits than its factorization.

61390060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1882 (or 1880 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 61390060 is about 7835.1809168647. The cubic root of 61390060 is about 394.4869909068.

Adding to 61390060 its reverse (6009316), we get a palindrome (67399376).

The spelling of 61390060 in words is "sixty-one million, three hundred ninety thousand, sixty".