61311060 has 48 divisors (see below), whose sum is σ = 190747200. Its totient is φ = 16349472.

The previous prime is 61311037. The next prime is 61311067. The reversal of 61311060 is 6011316.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61311067) 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, 56230 + ... + 57309.

It is an arithmetic number, because the mean of its divisors is an integer number (3973900).

Almost surely, 2^61311060 is an apocalyptic number.

61311060 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61311060 is an abundant number, since it is smaller than the sum of its proper divisors (129436140).

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

61311060 is a wasteful number, since it uses less digits than its factorization.

61311060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113557 (or 113549 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 61311060 is about 7830.1379298196. The cubic root of 61311060 is about 394.3177026437.

Adding to 61311060 its reverse (6011316), we get a palindrome (67322376).

The spelling of 61311060 in words is "sixty-one million, three hundred eleven thousand, sixty".