61911164 has 24 divisors (see below), whose sum is σ = 124547808. Its totient is φ = 26377920.

The previous prime is 61911151. The next prime is 61911169. The reversal of 61911164 is 46111916.

61911164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61911169) by changing a digit.

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, 1547 + ... + 11234.

It is an arithmetic number, because the mean of its divisors is an integer number (5189492).

Almost surely, 2^61911164 is an apocalyptic number.

It is an amenable number.

61911164 is an abundant number, since it is smaller than the sum of its proper divisors (62636644).

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

61911164 is a wasteful number, since it uses less digits than its factorization.

61911164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12965 (or 12963 counting only the distinct ones).

The product of its digits is 1296, while the sum is 29.

The square root of 61911164 is about 7868.3647602281. The cubic root of 61911164 is about 395.6000366008.

The spelling of 61911164 in words is "sixty-one million, nine hundred eleven thousand, one hundred sixty-four".