61107620 has 24 divisors (see below), whose sum is σ = 146658624. Its totient is φ = 20951136.

The previous prime is 61107587. The next prime is 61107647. The reversal of 61107620 is 2670116.

61107620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 218102 + ... + 218381.

It is an arithmetic number, because the mean of its divisors is an integer number (6110776).

Almost surely, 2^61107620 is an apocalyptic number.

It is an amenable number.

61107620 is an abundant number, since it is smaller than the sum of its proper divisors (85551004).

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

61107620 is a wasteful number, since it uses less digits than its factorization.

61107620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436499 (or 436497 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 61107620 is about 7817.1363042997. The cubic root of 61107620 is about 393.8810827528.

Adding to 61107620 its reverse (2670116), we get a palindrome (63777736).

The spelling of 61107620 in words is "sixty-one million, one hundred seven thousand, six hundred twenty".