61209934 has 12 divisors (see below), whose sum is σ = 94875192. Its totient is φ = 29616780.

The previous prime is 61209919. The next prime is 61209937. The reversal of 61209934 is 43990216.

It is a self number, because there is not a number n which added to its sum of digits gives 61209934.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61209937) 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 5 ways as a sum of consecutive naturals, for example, 14002 + ... + 17845.

It is an arithmetic number, because the mean of its divisors is an integer number (7906266).

Almost surely, 2^61209934 is an apocalyptic number.

61209934 is a deficient number, since it is larger than the sum of its proper divisors (33665258).

61209934 is a wasteful number, since it uses less digits than its factorization.

61209934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31911 (or 31880 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 61209934 is about 7823.6777796635. The cubic root of 61209934 is about 394.1007884594.

The spelling of 61209934 in words is "sixty-one million, two hundred nine thousand, nine hundred thirty-four".