61405116 has 24 divisors (see below), whose sum is σ = 143614464. Its totient is φ = 20420400.

The previous prime is 61405109. The next prime is 61405117. The reversal of 61405116 is 61150416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61405117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460 + ... + 11091.

It is an arithmetic number, because the mean of its divisors is an integer number (5983936).

Almost surely, 2^61405116 is an apocalyptic number.

It is an amenable number.

61405116 is an abundant number, since it is smaller than the sum of its proper divisors (82209348).

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

61405116 is a wasteful number, since it uses less digits than its factorization.

61405116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12001 (or 11999 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 61405116 is about 7836.1416526247. The cubic root of 61405116 is about 394.5192377703.

The spelling of 61405116 in words is "sixty-one million, four hundred five thousand, one hundred sixteen".