61747992 has 48 divisors (see below), whose sum is σ = 167862240. Its totient is φ = 20505408.

The previous prime is 61747991. The next prime is 61748003. The reversal of 61747992 is 29974716.

61747992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61747991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19633 + ... + 22559.

It is an arithmetic number, because the mean of its divisors is an integer number (3497130).

Almost surely, 2^61747992 is an apocalyptic number.

It is an amenable number.

61747992 is an abundant number, since it is smaller than the sum of its proper divisors (106114248).

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

61747992 is a wasteful number, since it uses less digits than its factorization.

61747992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3232 (or 3225 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 61747992 is about 7857.9890557318. The cubic root of 61747992 is about 395.2521852717.

The spelling of 61747992 in words is "sixty-one million, seven hundred forty-seven thousand, nine hundred ninety-two".