61723966 has 8 divisors (see below), whose sum is σ = 92902824. Its totient is φ = 30756360.

The previous prime is 61723931. The next prime is 61723967. The reversal of 61723966 is 66932716.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61723967) 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 3 ways as a sum of consecutive naturals, for example, 52080 + ... + 53251.

It is an arithmetic number, because the mean of its divisors is an integer number (11612853).

Almost surely, 2^61723966 is an apocalyptic number.

61723966 is a deficient number, since it is larger than the sum of its proper divisors (31178858).

61723966 is a wasteful number, since it uses less digits than its factorization.

61723966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105626.

The product of its digits is 81648, while the sum is 40.

The square root of 61723966 is about 7856.4601443653. The cubic root of 61723966 is about 395.2009147195.

The spelling of 61723966 in words is "sixty-one million, seven hundred twenty-three thousand, nine hundred sixty-six".