61220360 has 32 divisors (see below), whose sum is σ = 138456000. Its totient is φ = 24361920.

The previous prime is 61220333. The next prime is 61220377. The reversal of 61220360 is 6302216.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4115 + ... + 11805.

It is an arithmetic number, because the mean of its divisors is an integer number (4326750).

Almost surely, 2^61220360 is an apocalyptic number.

It is an amenable number.

61220360 is an abundant number, since it is smaller than the sum of its proper divisors (77235640).

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

61220360 is a wasteful number, since it uses less digits than its factorization.

61220360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7901 (or 7897 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 61220360 is about 7824.3440619646. The cubic root of 61220360 is about 394.1231631584.

Adding to 61220360 its reverse (6302216), we get a palindrome (67522576).

The spelling of 61220360 in words is "sixty-one million, two hundred twenty thousand, three hundred sixty".