61955916 has 24 divisors (see below), whose sum is σ = 157706304. Its totient is φ = 18774480.

The previous prime is 61955911. The next prime is 61955953.

61955916 is nontrivially palindromic in base 10.

61955916 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

61955916 is strictly pandigital in base 9.

It is not an unprimeable number, because it can be changed into a prime (61955911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234550 + ... + 234813.

It is an arithmetic number, because the mean of its divisors is an integer number (6571096).

Almost surely, 2^61955916 is an apocalyptic number.

61955916 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

61955916 is an abundant number, since it is smaller than the sum of its proper divisors (95750388).

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

61955916 is a wasteful number, since it uses less digits than its factorization.

61955916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469381 (or 469379 counting only the distinct ones).

The product of its digits is 72900, while the sum is 42.

The square root of 61955916 is about 7871.2080394308. The cubic root of 61955916 is about 395.6953324392.

The spelling of 61955916 in words is "sixty-one million, nine hundred fifty-five thousand, nine hundred sixteen".