61730164 has 24 divisors (see below), whose sum is σ = 114004800. Its totient is φ = 29165760.

The previous prime is 61730161. The next prime is 61730177. The reversal of 61730164 is 46103716.

It is a super-2 number, since 2×61730164² = 7621226294933792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61730161) 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, 38817 + ... + 40375.

It is an arithmetic number, because the mean of its divisors is an integer number (4750200).

Almost surely, 2^61730164 is an apocalyptic number.

It is an amenable number.

61730164 is a deficient number, since it is larger than the sum of its proper divisors (52274636).

61730164 is a wasteful number, since it uses less digits than its factorization.

61730164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2103 (or 2101 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 61730164 is about 7856.8545869196. The cubic root of 61730164 is about 395.2141422843.

The spelling of 61730164 in words is "sixty-one million, seven hundred thirty thousand, one hundred sixty-four".